diff --git a/Libraries/LibWeb/CSS/Interpolation.cpp b/Libraries/LibWeb/CSS/Interpolation.cpp
index a6589311c34..a5df26512f8 100644
--- a/Libraries/LibWeb/CSS/Interpolation.cpp
+++ b/Libraries/LibWeb/CSS/Interpolation.cpp
@@ -177,6 +177,89 @@ static FloatVector4 slerp(FloatVector4 const& from, FloatVector4 const& to, floa
     return from * (cosf(delta * theta) - (product * w)) + to * w;
 }
 
+static RefPtr<CSSStyleValue const> interpolate_rotate(DOM::Element& element, CalculationContext calculation_context, CSSStyleValue const& a_from, CSSStyleValue const& a_to, float delta, AllowDiscrete allow_discrete)
+{
+    if (a_from.to_keyword() == Keyword::None && a_to.to_keyword() == Keyword::None)
+        return a_from;
+
+    static auto zero_degrees_value = AngleStyleValue::create(Angle::make_degrees(0));
+    static auto zero = TransformationStyleValue::create(PropertyID::Rotate, TransformFunction::Rotate, { zero_degrees_value });
+
+    auto const& from = a_from.to_keyword() == Keyword::None ? *zero : a_from;
+    auto const& to = a_to.to_keyword() == Keyword::None ? *zero : a_to;
+
+    auto const& from_transform = from.as_transformation();
+    auto const& to_transform = to.as_transformation();
+
+    auto from_transform_type = from_transform.transform_function();
+    auto to_transform_type = to_transform.transform_function();
+
+    if (from_transform_type == to_transform_type && from_transform.values().size() == 1) {
+        auto interpolated_angle = interpolate_value(element, calculation_context, from_transform.values()[0], to_transform.values()[0], delta, allow_discrete);
+        if (!interpolated_angle)
+            return {};
+        return TransformationStyleValue::create(PropertyID::Rotate, from_transform_type, { *interpolated_angle.release_nonnull() });
+    }
+
+    FloatVector3 from_axis { 0, 0, 1 };
+    auto from_angle_value = from_transform.values()[0];
+    if (from_transform.values().size() == 4) {
+        from_axis.set_x(from_transform.values()[0]->as_number().number());
+        from_axis.set_y(from_transform.values()[1]->as_number().number());
+        from_axis.set_z(from_transform.values()[2]->as_number().number());
+        from_angle_value = from_transform.values()[3];
+    }
+    float from_angle = from_angle_value->as_angle().angle().to_radians();
+
+    FloatVector3 to_axis { 0, 0, 1 };
+    auto to_angle_value = to_transform.values()[0];
+    if (to_transform.values().size() == 4) {
+        to_axis.set_x(to_transform.values()[0]->as_number().number());
+        to_axis.set_y(to_transform.values()[1]->as_number().number());
+        to_axis.set_z(to_transform.values()[2]->as_number().number());
+        to_angle_value = to_transform.values()[3];
+    }
+    float to_angle = to_angle_value->as_angle().angle().to_radians();
+
+    auto from_axis_angle = [](FloatVector3 const& axis, float angle) -> FloatVector4 {
+        auto normalized = axis.normalized();
+        auto half_angle = angle / 2.0f;
+        auto sin_half_angle = sin(half_angle);
+        FloatVector4 result { normalized.x() * sin_half_angle, normalized.y() * sin_half_angle, normalized.z() * sin_half_angle, cosf(half_angle) };
+        return result;
+    };
+
+    struct AxisAngle {
+        FloatVector3 axis;
+        float angle;
+    };
+    auto quaternion_to_axis_angle = [](FloatVector4 const& quaternion) {
+        FloatVector3 axis { quaternion[0], quaternion[1], quaternion[2] };
+        auto epsilon = 1e-5f;
+        auto sin_half_angle = sqrtf(max(0.0f, 1.0f - quaternion[3] * quaternion[3]));
+        if (sin_half_angle < epsilon)
+            return AxisAngle { axis, quaternion[3] };
+        auto angle = 2.0f * acosf(quaternion[3]);
+        axis = axis * (1.0f / sin_half_angle);
+        return AxisAngle { axis, angle };
+    };
+
+    auto from_quaternion = from_axis_angle(from_axis, from_angle);
+    auto to_quaternion = from_axis_angle(to_axis, to_angle);
+
+    auto interpolated_quaternion = slerp(from_quaternion, to_quaternion, delta);
+    auto interpolated_axis_angle = quaternion_to_axis_angle(interpolated_quaternion);
+    auto interpolated_x_axis = NumberStyleValue::create(interpolated_axis_angle.axis.x());
+    auto interpolated_y_axis = NumberStyleValue::create(interpolated_axis_angle.axis.y());
+    auto interpolated_z_axis = NumberStyleValue::create(interpolated_axis_angle.axis.z());
+    auto interpolated_angle = AngleStyleValue::create(Angle::make_degrees(AK::to_degrees(interpolated_axis_angle.angle)));
+
+    return TransformationStyleValue::create(
+        PropertyID::Rotate,
+        TransformFunction::Rotate3d,
+        { interpolated_x_axis, interpolated_y_axis, interpolated_z_axis, interpolated_angle });
+}
+
 ValueComparingRefPtr<CSSStyleValue const> interpolate_property(DOM::Element& element, PropertyID property_id, CSSStyleValue const& a_from, CSSStyleValue const& a_to, float delta, AllowDiscrete allow_discrete)
 {
     auto from = with_keyword_values_resolved(element, property_id, a_from);
@@ -273,6 +356,12 @@ ValueComparingRefPtr<CSSStyleValue const> interpolate_property(DOM::Element& ele
             return interpolate_discrete(from, to, delta, allow_discrete);
         }
 
+        if (property_id == PropertyID::Rotate) {
+            if (auto result = interpolate_rotate(element, calculation_context, from, to, delta, allow_discrete))
+                return result;
+            return interpolate_discrete(from, to, delta, allow_discrete);
+        }
+
         // FIXME: Handle all custom animatable properties
         [[fallthrough]];
     }
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/css-transforms/animation/rotate-interpolation.txt b/Tests/LibWeb/Text/expected/wpt-import/css/css-transforms/animation/rotate-interpolation.txt
new file mode 100644
index 00000000000..0ec3f1a6c44
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/css-transforms/animation/rotate-interpolation.txt
@@ -0,0 +1,366 @@
+Harness status: OK
+
+Found 360 tests
+
+238 Pass
+122 Fail
+Pass	CSS Transitions: property <rotate> from [100deg] to [180deg] at (-1) should be [20deg]
+Pass	CSS Transitions: property <rotate> from [100deg] to [180deg] at (0) should be [100deg]
+Pass	CSS Transitions: property <rotate> from [100deg] to [180deg] at (0.125) should be [110deg]
+Pass	CSS Transitions: property <rotate> from [100deg] to [180deg] at (0.875) should be [170deg]
+Pass	CSS Transitions: property <rotate> from [100deg] to [180deg] at (1) should be [180deg]
+Pass	CSS Transitions: property <rotate> from [100deg] to [180deg] at (2) should be [260deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [100deg] to [180deg] at (-1) should be [20deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [100deg] to [180deg] at (0) should be [100deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [100deg] to [180deg] at (0.125) should be [110deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [100deg] to [180deg] at (0.875) should be [170deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [100deg] to [180deg] at (1) should be [180deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [100deg] to [180deg] at (2) should be [260deg]
+Pass	CSS Animations: property <rotate> from [100deg] to [180deg] at (-1) should be [20deg]
+Pass	CSS Animations: property <rotate> from [100deg] to [180deg] at (0) should be [100deg]
+Pass	CSS Animations: property <rotate> from [100deg] to [180deg] at (0.125) should be [110deg]
+Pass	CSS Animations: property <rotate> from [100deg] to [180deg] at (0.875) should be [170deg]
+Pass	CSS Animations: property <rotate> from [100deg] to [180deg] at (1) should be [180deg]
+Pass	CSS Animations: property <rotate> from [100deg] to [180deg] at (2) should be [260deg]
+Pass	Web Animations: property <rotate> from [100deg] to [180deg] at (-1) should be [20deg]
+Pass	Web Animations: property <rotate> from [100deg] to [180deg] at (0) should be [100deg]
+Pass	Web Animations: property <rotate> from [100deg] to [180deg] at (0.125) should be [110deg]
+Pass	Web Animations: property <rotate> from [100deg] to [180deg] at (0.875) should be [170deg]
+Pass	Web Animations: property <rotate> from [100deg] to [180deg] at (1) should be [180deg]
+Pass	Web Animations: property <rotate> from [100deg] to [180deg] at (2) should be [260deg]
+Pass	CSS Transitions: property <rotate> from [45deg] to [-1 1 0 60deg] at (-1) should be [0.447214 -0.447214 0.774597 104.478deg]
+Pass	CSS Transitions: property <rotate> from [45deg] to [-1 1 0 60deg] at (0) should be [45deg]
+Pass	CSS Transitions: property <rotate> from [45deg] to [-1 1 0 60deg] at (0.125) should be [-0.136456 0.136456 0.981203 40.6037deg]
+Pass	CSS Transitions: property <rotate> from [45deg] to [-1 1 0 60deg] at (0.875) should be [-0.70246 0.70246 0.114452 53.1994deg]
+Pass	CSS Transitions: property <rotate> from [45deg] to [-1 1 0 60deg] at (1) should be [-0.71 0.71 0 60deg]
+Fail	CSS Transitions: property <rotate> from [45deg] to [-1 1 0 60deg] at (2) should be [-0.637897 0.637897 -0.431479 124.975deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [45deg] to [-1 1 0 60deg] at (-1) should be [0.447214 -0.447214 0.774597 104.478deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [45deg] to [-1 1 0 60deg] at (0) should be [45deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [45deg] to [-1 1 0 60deg] at (0.125) should be [-0.136456 0.136456 0.981203 40.6037deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [45deg] to [-1 1 0 60deg] at (0.875) should be [-0.70246 0.70246 0.114452 53.1994deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [45deg] to [-1 1 0 60deg] at (1) should be [-0.71 0.71 0 60deg]
+Fail	CSS Transitions with transition: all: property <rotate> from [45deg] to [-1 1 0 60deg] at (2) should be [-0.637897 0.637897 -0.431479 124.975deg]
+Pass	CSS Animations: property <rotate> from [45deg] to [-1 1 0 60deg] at (-1) should be [0.447214 -0.447214 0.774597 104.478deg]
+Pass	CSS Animations: property <rotate> from [45deg] to [-1 1 0 60deg] at (0) should be [45deg]
+Pass	CSS Animations: property <rotate> from [45deg] to [-1 1 0 60deg] at (0.125) should be [-0.136456 0.136456 0.981203 40.6037deg]
+Pass	CSS Animations: property <rotate> from [45deg] to [-1 1 0 60deg] at (0.875) should be [-0.70246 0.70246 0.114452 53.1994deg]
+Pass	CSS Animations: property <rotate> from [45deg] to [-1 1 0 60deg] at (1) should be [-0.71 0.71 0 60deg]
+Fail	CSS Animations: property <rotate> from [45deg] to [-1 1 0 60deg] at (2) should be [-0.637897 0.637897 -0.431479 124.975deg]
+Pass	Web Animations: property <rotate> from [45deg] to [-1 1 0 60deg] at (-1) should be [0.447214 -0.447214 0.774597 104.478deg]
+Pass	Web Animations: property <rotate> from [45deg] to [-1 1 0 60deg] at (0) should be [45deg]
+Pass	Web Animations: property <rotate> from [45deg] to [-1 1 0 60deg] at (0.125) should be [-0.136456 0.136456 0.981203 40.6037deg]
+Pass	Web Animations: property <rotate> from [45deg] to [-1 1 0 60deg] at (0.875) should be [-0.70246 0.70246 0.114452 53.1994deg]
+Pass	Web Animations: property <rotate> from [45deg] to [-1 1 0 60deg] at (1) should be [-0.71 0.71 0 60deg]
+Fail	Web Animations: property <rotate> from [45deg] to [-1 1 0 60deg] at (2) should be [-0.637897 0.637897 -0.431479 124.975deg]
+Fail	CSS Transitions: property <rotate> from [none] to [7 -8 9 400grad] at (-1) should be [0.5 -0.57 0.65 -400grad]
+Fail	CSS Transitions: property <rotate> from [none] to [7 -8 9 400grad] at (0) should be [0.5 -0.57 0.65 0deg]
+Fail	CSS Transitions: property <rotate> from [none] to [7 -8 9 400grad] at (0.125) should be [0.5 -0.57 0.65 50grad]
+Fail	CSS Transitions: property <rotate> from [none] to [7 -8 9 400grad] at (0.875) should be [0.5 -0.57 0.65 350grad]
+Fail	CSS Transitions: property <rotate> from [none] to [7 -8 9 400grad] at (1) should be [0.5 -0.57 0.65 400grad]
+Fail	CSS Transitions: property <rotate> from [none] to [7 -8 9 400grad] at (2) should be [0.5 -0.57 0.65 800grad]
+Fail	CSS Transitions with transition: all: property <rotate> from [none] to [7 -8 9 400grad] at (-1) should be [0.5 -0.57 0.65 -400grad]
+Fail	CSS Transitions with transition: all: property <rotate> from [none] to [7 -8 9 400grad] at (0) should be [0.5 -0.57 0.65 0deg]
+Fail	CSS Transitions with transition: all: property <rotate> from [none] to [7 -8 9 400grad] at (0.125) should be [0.5 -0.57 0.65 50grad]
+Fail	CSS Transitions with transition: all: property <rotate> from [none] to [7 -8 9 400grad] at (0.875) should be [0.5 -0.57 0.65 350grad]
+Fail	CSS Transitions with transition: all: property <rotate> from [none] to [7 -8 9 400grad] at (1) should be [0.5 -0.57 0.65 400grad]
+Fail	CSS Transitions with transition: all: property <rotate> from [none] to [7 -8 9 400grad] at (2) should be [0.5 -0.57 0.65 800grad]
+Fail	CSS Animations: property <rotate> from [none] to [7 -8 9 400grad] at (-1) should be [0.5 -0.57 0.65 -400grad]
+Fail	CSS Animations: property <rotate> from [none] to [7 -8 9 400grad] at (0) should be [0.5 -0.57 0.65 0deg]
+Fail	CSS Animations: property <rotate> from [none] to [7 -8 9 400grad] at (0.125) should be [0.5 -0.57 0.65 50grad]
+Fail	CSS Animations: property <rotate> from [none] to [7 -8 9 400grad] at (0.875) should be [0.5 -0.57 0.65 350grad]
+Fail	CSS Animations: property <rotate> from [none] to [7 -8 9 400grad] at (1) should be [0.5 -0.57 0.65 400grad]
+Fail	CSS Animations: property <rotate> from [none] to [7 -8 9 400grad] at (2) should be [0.5 -0.57 0.65 800grad]
+Fail	Web Animations: property <rotate> from [none] to [7 -8 9 400grad] at (-1) should be [0.5 -0.57 0.65 -400grad]
+Fail	Web Animations: property <rotate> from [none] to [7 -8 9 400grad] at (0) should be [0.5 -0.57 0.65 0deg]
+Fail	Web Animations: property <rotate> from [none] to [7 -8 9 400grad] at (0.125) should be [0.5 -0.57 0.65 50grad]
+Fail	Web Animations: property <rotate> from [none] to [7 -8 9 400grad] at (0.875) should be [0.5 -0.57 0.65 350grad]
+Fail	Web Animations: property <rotate> from [none] to [7 -8 9 400grad] at (1) should be [0.5 -0.57 0.65 400grad]
+Fail	Web Animations: property <rotate> from [none] to [7 -8 9 400grad] at (2) should be [0.5 -0.57 0.65 800grad]
+Pass	CSS Transitions: property <rotate> from [none] to [none] at (-1) should be [none]
+Pass	CSS Transitions: property <rotate> from [none] to [none] at (0) should be [none]
+Pass	CSS Transitions: property <rotate> from [none] to [none] at (0.125) should be [none]
+Pass	CSS Transitions: property <rotate> from [none] to [none] at (0.875) should be [none]
+Pass	CSS Transitions: property <rotate> from [none] to [none] at (1) should be [none]
+Pass	CSS Transitions: property <rotate> from [none] to [none] at (2) should be [none]
+Pass	CSS Transitions with transition: all: property <rotate> from [none] to [none] at (-1) should be [none]
+Pass	CSS Transitions with transition: all: property <rotate> from [none] to [none] at (0) should be [none]
+Pass	CSS Transitions with transition: all: property <rotate> from [none] to [none] at (0.125) should be [none]
+Pass	CSS Transitions with transition: all: property <rotate> from [none] to [none] at (0.875) should be [none]
+Pass	CSS Transitions with transition: all: property <rotate> from [none] to [none] at (1) should be [none]
+Pass	CSS Transitions with transition: all: property <rotate> from [none] to [none] at (2) should be [none]
+Pass	CSS Animations: property <rotate> from [none] to [none] at (-1) should be [none]
+Pass	CSS Animations: property <rotate> from [none] to [none] at (0) should be [none]
+Pass	CSS Animations: property <rotate> from [none] to [none] at (0.125) should be [none]
+Pass	CSS Animations: property <rotate> from [none] to [none] at (0.875) should be [none]
+Pass	CSS Animations: property <rotate> from [none] to [none] at (1) should be [none]
+Pass	CSS Animations: property <rotate> from [none] to [none] at (2) should be [none]
+Pass	Web Animations: property <rotate> from [none] to [none] at (-1) should be [none]
+Pass	Web Animations: property <rotate> from [none] to [none] at (0) should be [none]
+Pass	Web Animations: property <rotate> from [none] to [none] at (0.125) should be [none]
+Pass	Web Animations: property <rotate> from [none] to [none] at (0.875) should be [none]
+Pass	Web Animations: property <rotate> from [none] to [none] at (1) should be [none]
+Pass	Web Animations: property <rotate> from [none] to [none] at (2) should be [none]
+Pass	CSS Transitions: property <rotate> from [none] to [30deg] at (-1) should be [-30deg]
+Pass	CSS Transitions: property <rotate> from [none] to [30deg] at (0) should be [0deg]
+Pass	CSS Transitions: property <rotate> from [none] to [30deg] at (0.25) should be [7.5deg]
+Pass	CSS Transitions: property <rotate> from [none] to [30deg] at (0.75) should be [22.5deg]
+Pass	CSS Transitions: property <rotate> from [none] to [30deg] at (1) should be [30deg]
+Pass	CSS Transitions: property <rotate> from [none] to [30deg] at (2) should be [60deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [none] to [30deg] at (-1) should be [-30deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [none] to [30deg] at (0) should be [0deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [none] to [30deg] at (0.25) should be [7.5deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [none] to [30deg] at (0.75) should be [22.5deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [none] to [30deg] at (1) should be [30deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [none] to [30deg] at (2) should be [60deg]
+Pass	CSS Animations: property <rotate> from [none] to [30deg] at (-1) should be [-30deg]
+Pass	CSS Animations: property <rotate> from [none] to [30deg] at (0) should be [0deg]
+Pass	CSS Animations: property <rotate> from [none] to [30deg] at (0.25) should be [7.5deg]
+Pass	CSS Animations: property <rotate> from [none] to [30deg] at (0.75) should be [22.5deg]
+Pass	CSS Animations: property <rotate> from [none] to [30deg] at (1) should be [30deg]
+Pass	CSS Animations: property <rotate> from [none] to [30deg] at (2) should be [60deg]
+Pass	Web Animations: property <rotate> from [none] to [30deg] at (-1) should be [-30deg]
+Pass	Web Animations: property <rotate> from [none] to [30deg] at (0) should be [0deg]
+Pass	Web Animations: property <rotate> from [none] to [30deg] at (0.25) should be [7.5deg]
+Pass	Web Animations: property <rotate> from [none] to [30deg] at (0.75) should be [22.5deg]
+Pass	Web Animations: property <rotate> from [none] to [30deg] at (1) should be [30deg]
+Pass	Web Animations: property <rotate> from [none] to [30deg] at (2) should be [60deg]
+Pass	CSS Transitions: property <rotate> from neutral to [30deg] at (-1) should be [-10deg]
+Pass	CSS Transitions: property <rotate> from neutral to [30deg] at (0) should be [10deg]
+Pass	CSS Transitions: property <rotate> from neutral to [30deg] at (0.25) should be [15deg]
+Pass	CSS Transitions: property <rotate> from neutral to [30deg] at (0.75) should be [25deg]
+Pass	CSS Transitions: property <rotate> from neutral to [30deg] at (1) should be [30deg]
+Pass	CSS Transitions: property <rotate> from neutral to [30deg] at (2) should be [50deg]
+Pass	CSS Transitions with transition: all: property <rotate> from neutral to [30deg] at (-1) should be [-10deg]
+Pass	CSS Transitions with transition: all: property <rotate> from neutral to [30deg] at (0) should be [10deg]
+Pass	CSS Transitions with transition: all: property <rotate> from neutral to [30deg] at (0.25) should be [15deg]
+Pass	CSS Transitions with transition: all: property <rotate> from neutral to [30deg] at (0.75) should be [25deg]
+Pass	CSS Transitions with transition: all: property <rotate> from neutral to [30deg] at (1) should be [30deg]
+Pass	CSS Transitions with transition: all: property <rotate> from neutral to [30deg] at (2) should be [50deg]
+Fail	CSS Animations: property <rotate> from neutral to [30deg] at (-1) should be [-10deg]
+Fail	CSS Animations: property <rotate> from neutral to [30deg] at (0) should be [10deg]
+Fail	CSS Animations: property <rotate> from neutral to [30deg] at (0.25) should be [15deg]
+Fail	CSS Animations: property <rotate> from neutral to [30deg] at (0.75) should be [25deg]
+Pass	CSS Animations: property <rotate> from neutral to [30deg] at (1) should be [30deg]
+Fail	CSS Animations: property <rotate> from neutral to [30deg] at (2) should be [50deg]
+Fail	Web Animations: property <rotate> from neutral to [30deg] at (-1) should be [-10deg]
+Fail	Web Animations: property <rotate> from neutral to [30deg] at (0) should be [10deg]
+Fail	Web Animations: property <rotate> from neutral to [30deg] at (0.25) should be [15deg]
+Fail	Web Animations: property <rotate> from neutral to [30deg] at (0.75) should be [25deg]
+Pass	Web Animations: property <rotate> from neutral to [30deg] at (1) should be [30deg]
+Fail	Web Animations: property <rotate> from neutral to [30deg] at (2) should be [50deg]
+Pass	CSS Transitions: property <rotate> from [inherit] to [270deg] at (-1) should be [-90deg]
+Pass	CSS Transitions: property <rotate> from [inherit] to [270deg] at (0) should be [90deg]
+Pass	CSS Transitions: property <rotate> from [inherit] to [270deg] at (0.25) should be [135deg]
+Pass	CSS Transitions: property <rotate> from [inherit] to [270deg] at (0.75) should be [225deg]
+Pass	CSS Transitions: property <rotate> from [inherit] to [270deg] at (1) should be [270deg]
+Pass	CSS Transitions: property <rotate> from [inherit] to [270deg] at (2) should be [450deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [inherit] to [270deg] at (-1) should be [-90deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [inherit] to [270deg] at (0) should be [90deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [inherit] to [270deg] at (0.25) should be [135deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [inherit] to [270deg] at (0.75) should be [225deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [inherit] to [270deg] at (1) should be [270deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [inherit] to [270deg] at (2) should be [450deg]
+Pass	CSS Animations: property <rotate> from [inherit] to [270deg] at (-1) should be [-90deg]
+Pass	CSS Animations: property <rotate> from [inherit] to [270deg] at (0) should be [90deg]
+Pass	CSS Animations: property <rotate> from [inherit] to [270deg] at (0.25) should be [135deg]
+Pass	CSS Animations: property <rotate> from [inherit] to [270deg] at (0.75) should be [225deg]
+Pass	CSS Animations: property <rotate> from [inherit] to [270deg] at (1) should be [270deg]
+Pass	CSS Animations: property <rotate> from [inherit] to [270deg] at (2) should be [450deg]
+Pass	Web Animations: property <rotate> from [inherit] to [270deg] at (-1) should be [-90deg]
+Pass	Web Animations: property <rotate> from [inherit] to [270deg] at (0) should be [90deg]
+Pass	Web Animations: property <rotate> from [inherit] to [270deg] at (0.25) should be [135deg]
+Pass	Web Animations: property <rotate> from [inherit] to [270deg] at (0.75) should be [225deg]
+Pass	Web Animations: property <rotate> from [inherit] to [270deg] at (1) should be [270deg]
+Pass	Web Animations: property <rotate> from [inherit] to [270deg] at (2) should be [450deg]
+Pass	CSS Transitions: property <rotate> from [unset] to [30deg] at (-1) should be [-30deg]
+Pass	CSS Transitions: property <rotate> from [unset] to [30deg] at (0) should be [0deg]
+Pass	CSS Transitions: property <rotate> from [unset] to [30deg] at (0.25) should be [7.5deg]
+Pass	CSS Transitions: property <rotate> from [unset] to [30deg] at (0.75) should be [22.5deg]
+Pass	CSS Transitions: property <rotate> from [unset] to [30deg] at (1) should be [30deg]
+Pass	CSS Transitions: property <rotate> from [unset] to [30deg] at (2) should be [60deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [unset] to [30deg] at (-1) should be [-30deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [unset] to [30deg] at (0) should be [0deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [unset] to [30deg] at (0.25) should be [7.5deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [unset] to [30deg] at (0.75) should be [22.5deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [unset] to [30deg] at (1) should be [30deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [unset] to [30deg] at (2) should be [60deg]
+Pass	CSS Animations: property <rotate> from [unset] to [30deg] at (-1) should be [-30deg]
+Pass	CSS Animations: property <rotate> from [unset] to [30deg] at (0) should be [0deg]
+Pass	CSS Animations: property <rotate> from [unset] to [30deg] at (0.25) should be [7.5deg]
+Pass	CSS Animations: property <rotate> from [unset] to [30deg] at (0.75) should be [22.5deg]
+Pass	CSS Animations: property <rotate> from [unset] to [30deg] at (1) should be [30deg]
+Pass	CSS Animations: property <rotate> from [unset] to [30deg] at (2) should be [60deg]
+Pass	Web Animations: property <rotate> from [unset] to [30deg] at (-1) should be [-30deg]
+Pass	Web Animations: property <rotate> from [unset] to [30deg] at (0) should be [0deg]
+Pass	Web Animations: property <rotate> from [unset] to [30deg] at (0.25) should be [7.5deg]
+Pass	Web Animations: property <rotate> from [unset] to [30deg] at (0.75) should be [22.5deg]
+Pass	Web Animations: property <rotate> from [unset] to [30deg] at (1) should be [30deg]
+Pass	Web Animations: property <rotate> from [unset] to [30deg] at (2) should be [60deg]
+Pass	CSS Transitions: property <rotate> from [100deg] to [-100deg] at (-1) should be [300deg]
+Pass	CSS Transitions: property <rotate> from [100deg] to [-100deg] at (0) should be [100deg]
+Pass	CSS Transitions: property <rotate> from [100deg] to [-100deg] at (0.25) should be [50deg]
+Pass	CSS Transitions: property <rotate> from [100deg] to [-100deg] at (0.75) should be [-50deg]
+Pass	CSS Transitions: property <rotate> from [100deg] to [-100deg] at (1) should be [-100deg]
+Pass	CSS Transitions: property <rotate> from [100deg] to [-100deg] at (2) should be [-300deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [100deg] to [-100deg] at (-1) should be [300deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [100deg] to [-100deg] at (0) should be [100deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [100deg] to [-100deg] at (0.25) should be [50deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [100deg] to [-100deg] at (0.75) should be [-50deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [100deg] to [-100deg] at (1) should be [-100deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [100deg] to [-100deg] at (2) should be [-300deg]
+Pass	CSS Animations: property <rotate> from [100deg] to [-100deg] at (-1) should be [300deg]
+Pass	CSS Animations: property <rotate> from [100deg] to [-100deg] at (0) should be [100deg]
+Pass	CSS Animations: property <rotate> from [100deg] to [-100deg] at (0.25) should be [50deg]
+Pass	CSS Animations: property <rotate> from [100deg] to [-100deg] at (0.75) should be [-50deg]
+Pass	CSS Animations: property <rotate> from [100deg] to [-100deg] at (1) should be [-100deg]
+Pass	CSS Animations: property <rotate> from [100deg] to [-100deg] at (2) should be [-300deg]
+Pass	Web Animations: property <rotate> from [100deg] to [-100deg] at (-1) should be [300deg]
+Pass	Web Animations: property <rotate> from [100deg] to [-100deg] at (0) should be [100deg]
+Pass	Web Animations: property <rotate> from [100deg] to [-100deg] at (0.25) should be [50deg]
+Pass	Web Animations: property <rotate> from [100deg] to [-100deg] at (0.75) should be [-50deg]
+Pass	Web Animations: property <rotate> from [100deg] to [-100deg] at (1) should be [-100deg]
+Pass	Web Animations: property <rotate> from [100deg] to [-100deg] at (2) should be [-300deg]
+Pass	CSS Transitions: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (-1) should be [0 1 0 300deg]
+Pass	CSS Transitions: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (0) should be [0 1 0 100deg]
+Pass	CSS Transitions: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (0.25) should be [0 1 0 50deg]
+Fail	CSS Transitions: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (0.75) should be [0 1 0 -50deg]
+Fail	CSS Transitions: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (1) should be [0 1 0 -100deg]
+Fail	CSS Transitions: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (2) should be [0 1 0 -300deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (-1) should be [0 1 0 300deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (0) should be [0 1 0 100deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (0.25) should be [0 1 0 50deg]
+Fail	CSS Transitions with transition: all: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (0.75) should be [0 1 0 -50deg]
+Fail	CSS Transitions with transition: all: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (1) should be [0 1 0 -100deg]
+Fail	CSS Transitions with transition: all: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (2) should be [0 1 0 -300deg]
+Pass	CSS Animations: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (-1) should be [0 1 0 300deg]
+Pass	CSS Animations: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (0) should be [0 1 0 100deg]
+Pass	CSS Animations: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (0.25) should be [0 1 0 50deg]
+Fail	CSS Animations: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (0.75) should be [0 1 0 -50deg]
+Fail	CSS Animations: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (1) should be [0 1 0 -100deg]
+Fail	CSS Animations: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (2) should be [0 1 0 -300deg]
+Pass	Web Animations: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (-1) should be [0 1 0 300deg]
+Pass	Web Animations: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (0) should be [0 1 0 100deg]
+Pass	Web Animations: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (0.25) should be [0 1 0 50deg]
+Fail	Web Animations: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (0.75) should be [0 1 0 -50deg]
+Fail	Web Animations: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (1) should be [0 1 0 -100deg]
+Fail	Web Animations: property <rotate> from [0 1 0 100deg] to [0 1 0 -100deg] at (2) should be [0 1 0 -300deg]
+Pass	CSS Transitions: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (-1) should be [0.22 -0.55 0.8 300deg]
+Pass	CSS Transitions: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (0) should be [0.22 -0.55 0.8 100deg]
+Pass	CSS Transitions: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (0.25) should be [0.22 -0.55 0.8 50deg]
+Fail	CSS Transitions: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (0.75) should be [0.22 -0.55 0.8 -50deg]
+Fail	CSS Transitions: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (1) should be [0.22 -0.55 0.8 -100deg]
+Fail	CSS Transitions: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (2) should be [0.22 -0.55 0.8 -300deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (-1) should be [0.22 -0.55 0.8 300deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (0) should be [0.22 -0.55 0.8 100deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (0.25) should be [0.22 -0.55 0.8 50deg]
+Fail	CSS Transitions with transition: all: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (0.75) should be [0.22 -0.55 0.8 -50deg]
+Fail	CSS Transitions with transition: all: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (1) should be [0.22 -0.55 0.8 -100deg]
+Fail	CSS Transitions with transition: all: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (2) should be [0.22 -0.55 0.8 -300deg]
+Pass	CSS Animations: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (-1) should be [0.22 -0.55 0.8 300deg]
+Pass	CSS Animations: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (0) should be [0.22 -0.55 0.8 100deg]
+Pass	CSS Animations: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (0.25) should be [0.22 -0.55 0.8 50deg]
+Fail	CSS Animations: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (0.75) should be [0.22 -0.55 0.8 -50deg]
+Fail	CSS Animations: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (1) should be [0.22 -0.55 0.8 -100deg]
+Fail	CSS Animations: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (2) should be [0.22 -0.55 0.8 -300deg]
+Pass	Web Animations: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (-1) should be [0.22 -0.55 0.8 300deg]
+Pass	Web Animations: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (0) should be [0.22 -0.55 0.8 100deg]
+Pass	Web Animations: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (0.25) should be [0.22 -0.55 0.8 50deg]
+Fail	Web Animations: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (0.75) should be [0.22 -0.55 0.8 -50deg]
+Fail	Web Animations: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (1) should be [0.22 -0.55 0.8 -100deg]
+Fail	Web Animations: property <rotate> from [1 -2.5 3.64 100deg] to [1 -2.5 3.64 -100deg] at (2) should be [0.22 -0.55 0.8 -300deg]
+Fail	CSS Transitions: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (-1) should be [0 1 0 -10deg]
+Fail	CSS Transitions: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (0) should be [0 1 0 0deg]
+Pass	CSS Transitions: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (0.25) should be [0 1 0 2.5deg]
+Pass	CSS Transitions: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (0.75) should be [0 1 0 7.5deg]
+Pass	CSS Transitions: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (1) should be [0 1 0 10deg]
+Pass	CSS Transitions: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (2) should be [0 1 0 20deg]
+Fail	CSS Transitions with transition: all: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (-1) should be [0 1 0 -10deg]
+Fail	CSS Transitions with transition: all: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (0) should be [0 1 0 0deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (0.25) should be [0 1 0 2.5deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (0.75) should be [0 1 0 7.5deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (1) should be [0 1 0 10deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (2) should be [0 1 0 20deg]
+Fail	CSS Animations: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (-1) should be [0 1 0 -10deg]
+Fail	CSS Animations: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (0) should be [0 1 0 0deg]
+Pass	CSS Animations: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (0.25) should be [0 1 0 2.5deg]
+Pass	CSS Animations: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (0.75) should be [0 1 0 7.5deg]
+Pass	CSS Animations: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (1) should be [0 1 0 10deg]
+Pass	CSS Animations: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (2) should be [0 1 0 20deg]
+Fail	Web Animations: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (-1) should be [0 1 0 -10deg]
+Fail	Web Animations: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (0) should be [0 1 0 0deg]
+Pass	Web Animations: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (0.25) should be [0 1 0 2.5deg]
+Pass	Web Animations: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (0.75) should be [0 1 0 7.5deg]
+Pass	Web Animations: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (1) should be [0 1 0 10deg]
+Pass	Web Animations: property <rotate> from [1 0 0 0deg] to [0 1 0 10deg] at (2) should be [0 1 0 20deg]
+Fail	CSS Transitions: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (-1) should be [0.67 -0.06 -0.74 124.97deg]
+Pass	CSS Transitions: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (0) should be [0.71 0.71 0 90deg]
+Pass	CSS Transitions: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (0.25) should be [0.54 0.8 0.26 94.83deg]
+Pass	CSS Transitions: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (0.75) should be [0.17 0.78 0.61 118.68deg]
+Pass	CSS Transitions: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (1) should be [0 0.71 0.71 135deg]
+Pass	CSS Transitions: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (2) should be [-0.52 0.29 0.81 208.96deg]
+Fail	CSS Transitions with transition: all: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (-1) should be [0.67 -0.06 -0.74 124.97deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (0) should be [0.71 0.71 0 90deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (0.25) should be [0.54 0.8 0.26 94.83deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (0.75) should be [0.17 0.78 0.61 118.68deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (1) should be [0 0.71 0.71 135deg]
+Pass	CSS Transitions with transition: all: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (2) should be [-0.52 0.29 0.81 208.96deg]
+Fail	CSS Animations: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (-1) should be [0.67 -0.06 -0.74 124.97deg]
+Pass	CSS Animations: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (0) should be [0.71 0.71 0 90deg]
+Pass	CSS Animations: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (0.25) should be [0.54 0.8 0.26 94.83deg]
+Pass	CSS Animations: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (0.75) should be [0.17 0.78 0.61 118.68deg]
+Pass	CSS Animations: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (1) should be [0 0.71 0.71 135deg]
+Pass	CSS Animations: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (2) should be [-0.52 0.29 0.81 208.96deg]
+Fail	Web Animations: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (-1) should be [0.67 -0.06 -0.74 124.97deg]
+Pass	Web Animations: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (0) should be [0.71 0.71 0 90deg]
+Pass	Web Animations: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (0.25) should be [0.54 0.8 0.26 94.83deg]
+Pass	Web Animations: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (0.75) should be [0.17 0.78 0.61 118.68deg]
+Pass	Web Animations: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (1) should be [0 0.71 0.71 135deg]
+Pass	Web Animations: property <rotate> from [1 1 0 90deg] to [0 1 1 135deg] at (2) should be [-0.52 0.29 0.81 208.96deg]
+Fail	CSS Transitions: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (-1) should be [1 0 0 -450deg]
+Fail	CSS Transitions: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (0) should be [1 0 0 0deg]
+Fail	CSS Transitions: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (0.25) should be [1 0 0 112.5deg]
+Fail	CSS Transitions: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (0.75) should be [1 0 0 337.5deg]
+Fail	CSS Transitions: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (1) should be [1 0 0 450deg]
+Fail	CSS Transitions: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (2) should be [1 0 0 900deg]
+Fail	CSS Transitions with transition: all: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (-1) should be [1 0 0 -450deg]
+Fail	CSS Transitions with transition: all: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (0) should be [1 0 0 0deg]
+Fail	CSS Transitions with transition: all: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (0.25) should be [1 0 0 112.5deg]
+Fail	CSS Transitions with transition: all: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (0.75) should be [1 0 0 337.5deg]
+Fail	CSS Transitions with transition: all: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (1) should be [1 0 0 450deg]
+Fail	CSS Transitions with transition: all: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (2) should be [1 0 0 900deg]
+Fail	CSS Animations: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (-1) should be [1 0 0 -450deg]
+Fail	CSS Animations: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (0) should be [1 0 0 0deg]
+Fail	CSS Animations: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (0.25) should be [1 0 0 112.5deg]
+Fail	CSS Animations: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (0.75) should be [1 0 0 337.5deg]
+Fail	CSS Animations: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (1) should be [1 0 0 450deg]
+Fail	CSS Animations: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (2) should be [1 0 0 900deg]
+Fail	Web Animations: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (-1) should be [1 0 0 -450deg]
+Fail	Web Animations: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (0) should be [1 0 0 0deg]
+Fail	Web Animations: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (0.25) should be [1 0 0 112.5deg]
+Fail	Web Animations: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (0.75) should be [1 0 0 337.5deg]
+Fail	Web Animations: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (1) should be [1 0 0 450deg]
+Fail	Web Animations: property <rotate> from [0 1 0 0deg] to [1 0 0 450deg] at (2) should be [1 0 0 900deg]
+Fail	CSS Transitions: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (-1) should be [1 0 0 900deg]
+Fail	CSS Transitions: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (0) should be [1 0 0 450deg]
+Fail	CSS Transitions: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (0.25) should be [1 0 0 337.5deg]
+Fail	CSS Transitions: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (0.75) should be [1 0 0 112.5deg]
+Fail	CSS Transitions: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (1) should be [1 0 0 0deg]
+Fail	CSS Transitions: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (2) should be [1 0 0 -450deg]
+Fail	CSS Transitions with transition: all: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (-1) should be [1 0 0 900deg]
+Fail	CSS Transitions with transition: all: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (0) should be [1 0 0 450deg]
+Fail	CSS Transitions with transition: all: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (0.25) should be [1 0 0 337.5deg]
+Fail	CSS Transitions with transition: all: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (0.75) should be [1 0 0 112.5deg]
+Fail	CSS Transitions with transition: all: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (1) should be [1 0 0 0deg]
+Fail	CSS Transitions with transition: all: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (2) should be [1 0 0 -450deg]
+Fail	CSS Animations: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (-1) should be [1 0 0 900deg]
+Fail	CSS Animations: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (0) should be [1 0 0 450deg]
+Fail	CSS Animations: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (0.25) should be [1 0 0 337.5deg]
+Fail	CSS Animations: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (0.75) should be [1 0 0 112.5deg]
+Fail	CSS Animations: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (1) should be [1 0 0 0deg]
+Fail	CSS Animations: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (2) should be [1 0 0 -450deg]
+Fail	Web Animations: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (-1) should be [1 0 0 900deg]
+Fail	Web Animations: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (0) should be [1 0 0 450deg]
+Fail	Web Animations: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (0.25) should be [1 0 0 337.5deg]
+Fail	Web Animations: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (0.75) should be [1 0 0 112.5deg]
+Fail	Web Animations: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (1) should be [1 0 0 0deg]
+Fail	Web Animations: property <rotate> from [1 0 0 450deg] to [0 1 0 0deg] at (2) should be [1 0 0 -450deg]
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/css-transforms/animation/rotate-interpolation.html b/Tests/LibWeb/Text/input/wpt-import/css/css-transforms/animation/rotate-interpolation.html
new file mode 100644
index 00000000000..8d1e0db70e4
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/css-transforms/animation/rotate-interpolation.html
@@ -0,0 +1,250 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>rotate interpolation</title>
+<link rel="help" href="https://drafts.csswg.org/css-transforms-2/#propdef-rotate">
+<meta name="assert" content="rotate supports animation.">
+<meta name="timeout" content="long">
+
+<script src="../../../resources/testharness.js"></script>
+<script src="../../../resources/testharnessreport.js"></script>
+<script src="../../../css/support/interpolation-testcommon.js"></script>
+</head>
+
+<style>
+.parent {
+  rotate: 90deg;
+}
+
+.target {
+  width: 40px;
+  height: 20px;
+  background-color: grey;
+  rotate: 10deg;
+}
+
+.expected {
+  background-color: green;
+}
+</style>
+
+<template id="target-template">
+<div class="parent">
+    <div class="target">Text</div>
+</div>
+</template>
+
+<body>
+<script>
+test_interpolation({
+  property: 'rotate',
+  from: '100deg',
+  to: '180deg',
+}, [
+  {at: -1, expect: '20deg'},
+  {at: 0, expect: '100deg'},
+  {at: 0.125, expect: '110deg'},
+  {at: 0.875, expect: '170deg'},
+  {at: 1, expect: '180deg'},
+  {at: 2, expect: '260deg'}
+]);
+
+test_interpolation({
+  property: 'rotate',
+  from: '45deg',
+  to: '-1 1 0 60deg',
+}, [
+  {at: -1, expect: '0.447214 -0.447214 0.774597 104.478deg'},
+  {at: 0, expect: '45deg'},
+  {at: 0.125, expect: '-0.136456 0.136456 0.981203 40.6037deg'},
+  {at: 0.875, expect: '-0.70246 0.70246 0.114452 53.1994deg'},
+  {at: 1, expect: '-0.71 0.71 0 60deg'},
+  {at: 2, expect: '-0.637897 0.637897 -0.431479 124.975deg'}
+]);
+
+test_interpolation({
+  property: 'rotate',
+  from: 'none',
+  to: '7 -8 9 400grad',
+}, [
+  {at: -1, expect: '0.5 -0.57 0.65 -400grad'},
+  {at: 0, expect: '0.5 -0.57 0.65 0deg'},
+  {at: 0.125, expect: '0.5 -0.57 0.65 50grad'},
+  {at: 0.875, expect: '0.5 -0.57 0.65 350grad'},
+  {at: 1, expect: '0.5 -0.57 0.65 400grad'},
+  {at: 2, expect: '0.5 -0.57 0.65 800grad'}
+]);
+
+test_interpolation({
+  property: 'rotate',
+  from: 'none',
+  to: 'none',
+}, [
+  {at: -1, expect: 'none'},
+  {at: 0, expect: 'none'},
+  {at: 0.125, expect: 'none'},
+  {at: 0.875, expect: 'none'},
+  {at: 1, expect: 'none'},
+  {at: 2, expect: 'none'}
+]);
+
+test_interpolation({
+  property: 'rotate',
+  from: 'none',
+  to: '30deg',
+}, [
+  {at: -1, expect: '-30deg'},
+  {at: 0, expect: '0deg'},
+  {at: 0.25, expect: '7.5deg'},
+  {at: 0.75, expect: '22.5deg'},
+  {at: 1, expect: '30deg'},
+  {at: 2, expect: '60deg'},
+]);
+
+test_interpolation({
+  property: 'rotate',
+  from: neutralKeyframe,
+  to: '30deg',
+}, [
+  {at: -1, expect: '-10deg'},
+  {at: 0, expect: '10deg'},
+  {at: 0.25, expect: '15deg'},
+  {at: 0.75, expect: '25deg'},
+  {at: 1, expect: '30deg'},
+  {at: 2, expect: '50deg'},
+]);
+
+test_interpolation({
+  property: 'rotate',
+  from: 'inherit',
+  to: '270deg',
+}, [
+  {at: -1, expect: '-90deg'},
+  {at: 0, expect: '90deg'},
+  {at: 0.25, expect: '135deg'},
+  {at: 0.75, expect: '225deg'},
+  {at: 1, expect: '270deg'},
+  {at: 2, expect: '450deg'},
+]);
+
+test_interpolation({
+  property: 'rotate',
+  from: 'unset',
+  to: '30deg',
+}, [
+  {at: -1, expect: '-30deg'},
+  {at: 0, expect: '0deg'},
+  {at: 0.25, expect: '7.5deg'},
+  {at: 0.75, expect: '22.5deg'},
+  {at: 1, expect: '30deg'},
+  {at: 2, expect: '60deg'},
+]);
+
+test_interpolation({
+  property: 'rotate',
+  from: '100deg',
+  to: '-100deg',
+}, [
+  {at: -1, expect: '300deg'},
+  {at: 0, expect: '100deg'},
+  {at: 0.25, expect: '50deg'},
+  {at: 0.75, expect: '-50deg'},
+  {at: 1, expect: '-100deg'},
+  {at: 2, expect: '-300deg'},
+]);
+
+test_interpolation({
+  property: 'rotate',
+  from: '0 1 0 100deg',
+  to: '0 1 0 -100deg',
+}, [
+  {at: -1, expect: '0 1 0 300deg'},
+  {at: 0, expect: '0 1 0 100deg'},
+  {at: 0.25, expect: '0 1 0 50deg'},
+  {at: 0.75, expect: '0 1 0 -50deg'},
+  {at: 1, expect: '0 1 0 -100deg'},
+  {at: 2, expect: '0 1 0 -300deg'},
+]);
+
+test_interpolation({
+  property: 'rotate',
+  from: '1 -2.5 3.64 100deg',
+  to: '1 -2.5 3.64 -100deg',
+}, [
+  {at: -1, expect: '0.22 -0.55 0.8 300deg'},
+  {at: 0, expect: '0.22 -0.55 0.8 100deg'},
+  {at: 0.25, expect: '0.22 -0.55 0.8 50deg'},
+  {at: 0.75, expect: '0.22 -0.55 0.8 -50deg'},
+  {at: 1, expect: '0.22 -0.55 0.8 -100deg'},
+  {at: 2, expect: '0.22 -0.55 0.8 -300deg'},
+]);
+
+// The rotation angle gets interpolated numerically and the rotation vector
+// of the non-zero angle is used or (0, 0, 1) if both angles are zero.
+// So, we have to convert "1 0 0 0deg" into "0 1 0 0deg", and apply the same
+// concept for other test cases.
+// https://drafts.csswg.org/css-transforms-2/#interpolation-of-transform-functions
+test_interpolation({
+  property: 'rotate',
+  from: '1 0 0 0deg',
+  to: '0 1 0 10deg',
+}, [
+  {at: -1, expect: '0 1 0 -10deg'},
+  {at: 0, expect: '0 1 0 0deg'},
+  {at: 0.25, expect: '0 1 0 2.5deg'},
+  {at: 0.75, expect: '0 1 0 7.5deg'},
+  {at: 1, expect: '0 1 0 10deg'},
+  {at: 2, expect: '0 1 0 20deg'},
+]);
+
+test_interpolation({
+  property: 'rotate',
+  from: '1 1 0 90deg',
+  to: '0 1 1 135deg',
+}, [
+  {at: -1, expect: '0.67 -0.06 -0.74 124.97deg'},
+  {at: 0, expect: '0.71 0.71 0 90deg'},
+  {at: 0.25, expect: '0.54 0.8 0.26 94.83deg'},
+  {at: 0.75, expect: '0.17 0.78 0.61 118.68deg'},
+  {at: 1, expect: '0 0.71 0.71 135deg'},
+  // The result in Blink is '0.52 -0.29 -0.81 151.04deg', and the result in
+  // Gecko is `-0.52 0.29 0.8 208.96deg`. Both of them can be represented as the
+  // same 3d rotation (but by an opposite direction vector and angle).
+  // The spec only mentions we should use Slerp to do interpolation for rotate
+  // property, but it seems the implementation detail for extrapolation are
+  // different (because this is not in the range of [0, 1]).
+  // For now, we make both results pass because their rendering results are the
+  // same.
+  {at: 2, expect: '0.52 -0.29 -0.81 151.04deg',
+          option: '-0.52 0.29 0.81 208.96deg'},
+]);
+
+test_interpolation({
+  property: 'rotate',
+  from: '0 1 0 0deg',
+  to: '1 0 0 450deg',
+}, [
+  {at: -1, expect: '1 0 0 -450deg'},
+  {at: 0, expect: '1 0 0 0deg'},
+  {at: 0.25, expect: '1 0 0 112.5deg'},
+  {at: 0.75, expect: '1 0 0 337.5deg'},
+  {at: 1, expect: '1 0 0 450deg'},
+  {at: 2, expect: '1 0 0 900deg'},
+]);
+
+test_interpolation({
+  property: 'rotate',
+  from: '1 0 0 450deg',
+  to: '0 1 0 0deg',
+}, [
+  {at: -1, expect: '1 0 0 900deg'},
+  {at: 0, expect: '1 0 0 450deg'},
+  {at: 0.25, expect: '1 0 0 337.5deg'},
+  {at: 0.75, expect: '1 0 0 112.5deg'},
+  {at: 1, expect: '1 0 0 0deg'},
+  {at: 2, expect: '1 0 0 -450deg'},
+]);
+</script>
+</body>
+</html>