diff --git a/Libraries/LibWeb/CSS/StyleComputer.cpp b/Libraries/LibWeb/CSS/StyleComputer.cpp
index 68b355e579b..0b25e519557 100644
--- a/Libraries/LibWeb/CSS/StyleComputer.cpp
+++ b/Libraries/LibWeb/CSS/StyleComputer.cpp
@@ -3225,6 +3225,8 @@ NonnullRefPtr<StyleValue const> StyleComputer::compute_value_of_property(Propert
     case PropertyID::StopOpacity:
     case PropertyID::StrokeOpacity:
         return compute_opacity(specified_value, computation_context);
+    case PropertyID::PositionArea:
+        return compute_position_area(specified_value);
     case PropertyID::TextUnderlineOffset:
         return compute_text_underline_offset(specified_value, computation_context);
     default:
@@ -3567,6 +3569,105 @@ NonnullRefPtr<StyleValue const> StyleComputer::compute_opacity(NonnullRefPtr<Sty
     VERIFY_NOT_REACHED();
 }
 
+// https://drafts.csswg.org/css-anchor-position/#position-area-computed
+NonnullRefPtr<StyleValue const> StyleComputer::compute_position_area(NonnullRefPtr<StyleValue const> const& specified_value)
+{
+    // The computed value of a <position-area> value is the two keywords indicating the selected tracks in each axis,
+    // with the long (block-start) and short (start) logical keywords treated as equivalent. It serializes in the order
+    // given in the grammar (above), with the logical keywords serialized in their short forms (e.g. start start
+    // instead of block-start inline-start).
+    if (specified_value->is_keyword())
+        return specified_value;
+
+    auto to_short_keyword = [](NonnullRefPtr<KeywordStyleValue const> const& keyword_value) -> NonnullRefPtr<KeywordStyleValue const> {
+        switch (keyword_value->keyword()) {
+        case Keyword::BlockStart:
+        case Keyword::InlineStart:
+            return KeywordStyleValue::create(Keyword::Start);
+        case Keyword::BlockEnd:
+        case Keyword::InlineEnd:
+            return KeywordStyleValue::create(Keyword::End);
+        case Keyword::SelfBlockStart:
+        case Keyword::SelfInlineStart:
+            return KeywordStyleValue::create(Keyword::SelfStart);
+        case Keyword::SelfBlockEnd:
+        case Keyword::SelfInlineEnd:
+            return KeywordStyleValue::create(Keyword::SelfEnd);
+        case Keyword::SpanBlockStart:
+        case Keyword::SpanInlineStart:
+            return KeywordStyleValue::create(Keyword::SpanStart);
+        case Keyword::SpanBlockEnd:
+        case Keyword::SpanInlineEnd:
+            return KeywordStyleValue::create(Keyword::SpanEnd);
+        case Keyword::SpanSelfBlockStart:
+        case Keyword::SpanSelfInlineStart:
+            return KeywordStyleValue::create(Keyword::SpanSelfStart);
+        case Keyword::SpanSelfBlockEnd:
+        case Keyword::SpanSelfInlineEnd:
+            return KeywordStyleValue::create(Keyword::SpanSelfEnd);
+        default:
+            break;
+        }
+        return keyword_value;
+    };
+
+    auto const& value_list = specified_value->as_value_list();
+    VERIFY(value_list.size() == 2);
+
+    auto const& block_value = value_list.values().at(0);
+    auto const& inline_value = value_list.values().at(1);
+    if (block_value->as_keyword().keyword() == Keyword::SpanAll) {
+        switch (inline_value->as_keyword().keyword()) {
+        case Keyword::Start:
+            return KeywordStyleValue::create(Keyword::InlineStart);
+        case Keyword::End:
+            return KeywordStyleValue::create(Keyword::InlineEnd);
+        case Keyword::SelfStart:
+            return KeywordStyleValue::create(Keyword::SelfInlineStart);
+        case Keyword::SelfEnd:
+            return KeywordStyleValue::create(Keyword::SelfInlineEnd);
+        case Keyword::SpanStart:
+            return KeywordStyleValue::create(Keyword::SpanInlineStart);
+        case Keyword::SpanEnd:
+            return KeywordStyleValue::create(Keyword::SpanInlineEnd);
+        case Keyword::SpanSelfStart:
+            return KeywordStyleValue::create(Keyword::SpanSelfInlineStart);
+        case Keyword::SpanSelfEnd:
+            return KeywordStyleValue::create(Keyword::SpanSelfInlineEnd);
+        default:
+            return specified_value;
+        }
+    }
+    if (inline_value->as_keyword().keyword() == Keyword::SpanAll) {
+        switch (block_value->as_keyword().keyword()) {
+        case Keyword::Start:
+            return KeywordStyleValue::create(Keyword::BlockStart);
+        case Keyword::End:
+            return KeywordStyleValue::create(Keyword::BlockEnd);
+        case Keyword::SelfStart:
+            return KeywordStyleValue::create(Keyword::SelfBlockStart);
+        case Keyword::SelfEnd:
+            return KeywordStyleValue::create(Keyword::SelfBlockEnd);
+        case Keyword::SpanStart:
+            return KeywordStyleValue::create(Keyword::SpanBlockStart);
+        case Keyword::SpanEnd:
+            return KeywordStyleValue::create(Keyword::SpanBlockEnd);
+        case Keyword::SpanSelfStart:
+            return KeywordStyleValue::create(Keyword::SpanSelfBlockStart);
+        case Keyword::SpanSelfEnd:
+            return KeywordStyleValue::create(Keyword::SpanSelfBlockEnd);
+        default:
+            return specified_value;
+        }
+    }
+    auto short_block_value = to_short_keyword(block_value->as_keyword());
+    auto short_inline_value = to_short_keyword(inline_value->as_keyword());
+    if (*block_value != short_block_value || *inline_value != short_inline_value)
+        return StyleValueList::create({ short_block_value, short_inline_value }, StyleValueList::Separator::Space);
+
+    return specified_value;
+}
+
 NonnullRefPtr<StyleValue const> StyleComputer::compute_text_underline_offset(NonnullRefPtr<StyleValue const> const& specified_value, PropertyValueComputationContext const& computation_context)
 {
     // https://drafts.csswg.org/css-text-decor-4/#underline-offset
diff --git a/Libraries/LibWeb/CSS/StyleComputer.h b/Libraries/LibWeb/CSS/StyleComputer.h
index 5bba08dc0db..46f9402415c 100644
--- a/Libraries/LibWeb/CSS/StyleComputer.h
+++ b/Libraries/LibWeb/CSS/StyleComputer.h
@@ -212,6 +212,7 @@ public:
     static NonnullRefPtr<StyleValue const> compute_font_variation_settings(NonnullRefPtr<StyleValue const> const& specified_value);
     static NonnullRefPtr<StyleValue const> compute_line_height(NonnullRefPtr<StyleValue const> const& specified_value, Length::ResolutionContext const&);
     static NonnullRefPtr<StyleValue const> compute_opacity(NonnullRefPtr<StyleValue const> const& specified_value, PropertyValueComputationContext const&);
+    static NonnullRefPtr<StyleValue const> compute_position_area(NonnullRefPtr<StyleValue const> const& specified_value);
     static NonnullRefPtr<StyleValue const> compute_text_underline_offset(NonnullRefPtr<StyleValue const> const& specified_value, PropertyValueComputationContext const&);
 
 private:
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/css-anchor-position/position-area-computed.txt b/Tests/LibWeb/Text/expected/wpt-import/css/css-anchor-position/position-area-computed.txt
new file mode 100644
index 00000000000..08229a3aaed
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/css-anchor-position/position-area-computed.txt
@@ -0,0 +1,638 @@
+Harness status: OK
+
+Found 633 tests
+
+633 Pass
+Pass	Property position-area value 'none'
+Pass	Property position-area value 'span-all'
+Pass	Property position-area value 'center'
+Pass	Property position-area value 'left'
+Pass	Property position-area value 'right'
+Pass	Property position-area value 'span-left'
+Pass	Property position-area value 'span-right'
+Pass	Property position-area value 'x-start'
+Pass	Property position-area value 'x-end'
+Pass	Property position-area value 'span-x-start'
+Pass	Property position-area value 'span-x-end'
+Pass	Property position-area value 'x-self-start'
+Pass	Property position-area value 'x-self-end'
+Pass	Property position-area value 'span-x-self-start'
+Pass	Property position-area value 'span-x-self-end'
+Pass	Property position-area value 'top'
+Pass	Property position-area value 'bottom'
+Pass	Property position-area value 'span-top'
+Pass	Property position-area value 'span-bottom'
+Pass	Property position-area value 'y-start'
+Pass	Property position-area value 'y-end'
+Pass	Property position-area value 'span-y-start'
+Pass	Property position-area value 'span-y-end'
+Pass	Property position-area value 'y-self-start'
+Pass	Property position-area value 'y-self-end'
+Pass	Property position-area value 'span-y-self-start'
+Pass	Property position-area value 'span-y-self-end'
+Pass	Property position-area value 'inline-start'
+Pass	Property position-area value 'inline-end'
+Pass	Property position-area value 'span-inline-start'
+Pass	Property position-area value 'span-inline-end'
+Pass	Property position-area value 'block-start'
+Pass	Property position-area value 'block-end'
+Pass	Property position-area value 'span-block-start'
+Pass	Property position-area value 'span-block-end'
+Pass	Property position-area value 'self-inline-start'
+Pass	Property position-area value 'self-inline-end'
+Pass	Property position-area value 'span-self-inline-start'
+Pass	Property position-area value 'span-self-inline-end'
+Pass	Property position-area value 'self-block-start'
+Pass	Property position-area value 'self-block-end'
+Pass	Property position-area value 'span-self-block-start'
+Pass	Property position-area value 'span-self-block-end'
+Pass	Property position-area value 'start'
+Pass	Property position-area value 'end'
+Pass	Property position-area value 'span-start'
+Pass	Property position-area value 'span-end'
+Pass	Property position-area value 'self-start'
+Pass	Property position-area value 'self-end'
+Pass	Property position-area value 'span-self-start'
+Pass	Property position-area value 'span-self-end'
+Pass	Property position-area value 'left top'
+Pass	Property position-area value 'top left'
+Pass	Property position-area value 'left bottom'
+Pass	Property position-area value 'bottom left'
+Pass	Property position-area value 'left span-top'
+Pass	Property position-area value 'span-top left'
+Pass	Property position-area value 'left span-bottom'
+Pass	Property position-area value 'span-bottom left'
+Pass	Property position-area value 'left y-start'
+Pass	Property position-area value 'y-start left'
+Pass	Property position-area value 'left y-end'
+Pass	Property position-area value 'y-end left'
+Pass	Property position-area value 'left span-y-start'
+Pass	Property position-area value 'span-y-start left'
+Pass	Property position-area value 'left span-y-end'
+Pass	Property position-area value 'span-y-end left'
+Pass	Property position-area value 'left y-self-start'
+Pass	Property position-area value 'y-self-start left'
+Pass	Property position-area value 'left y-self-end'
+Pass	Property position-area value 'y-self-end left'
+Pass	Property position-area value 'left span-y-self-start'
+Pass	Property position-area value 'span-y-self-start left'
+Pass	Property position-area value 'left span-y-self-end'
+Pass	Property position-area value 'span-y-self-end left'
+Pass	Property position-area value 'right top'
+Pass	Property position-area value 'top right'
+Pass	Property position-area value 'right bottom'
+Pass	Property position-area value 'bottom right'
+Pass	Property position-area value 'right span-top'
+Pass	Property position-area value 'span-top right'
+Pass	Property position-area value 'right span-bottom'
+Pass	Property position-area value 'span-bottom right'
+Pass	Property position-area value 'right y-start'
+Pass	Property position-area value 'y-start right'
+Pass	Property position-area value 'right y-end'
+Pass	Property position-area value 'y-end right'
+Pass	Property position-area value 'right span-y-start'
+Pass	Property position-area value 'span-y-start right'
+Pass	Property position-area value 'right span-y-end'
+Pass	Property position-area value 'span-y-end right'
+Pass	Property position-area value 'right y-self-start'
+Pass	Property position-area value 'y-self-start right'
+Pass	Property position-area value 'right y-self-end'
+Pass	Property position-area value 'y-self-end right'
+Pass	Property position-area value 'right span-y-self-start'
+Pass	Property position-area value 'span-y-self-start right'
+Pass	Property position-area value 'right span-y-self-end'
+Pass	Property position-area value 'span-y-self-end right'
+Pass	Property position-area value 'span-left top'
+Pass	Property position-area value 'top span-left'
+Pass	Property position-area value 'span-left bottom'
+Pass	Property position-area value 'bottom span-left'
+Pass	Property position-area value 'span-left span-top'
+Pass	Property position-area value 'span-top span-left'
+Pass	Property position-area value 'span-left span-bottom'
+Pass	Property position-area value 'span-bottom span-left'
+Pass	Property position-area value 'span-left y-start'
+Pass	Property position-area value 'y-start span-left'
+Pass	Property position-area value 'span-left y-end'
+Pass	Property position-area value 'y-end span-left'
+Pass	Property position-area value 'span-left span-y-start'
+Pass	Property position-area value 'span-y-start span-left'
+Pass	Property position-area value 'span-left span-y-end'
+Pass	Property position-area value 'span-y-end span-left'
+Pass	Property position-area value 'span-left y-self-start'
+Pass	Property position-area value 'y-self-start span-left'
+Pass	Property position-area value 'span-left y-self-end'
+Pass	Property position-area value 'y-self-end span-left'
+Pass	Property position-area value 'span-left span-y-self-start'
+Pass	Property position-area value 'span-y-self-start span-left'
+Pass	Property position-area value 'span-left span-y-self-end'
+Pass	Property position-area value 'span-y-self-end span-left'
+Pass	Property position-area value 'span-right top'
+Pass	Property position-area value 'top span-right'
+Pass	Property position-area value 'span-right bottom'
+Pass	Property position-area value 'bottom span-right'
+Pass	Property position-area value 'span-right span-top'
+Pass	Property position-area value 'span-top span-right'
+Pass	Property position-area value 'span-right span-bottom'
+Pass	Property position-area value 'span-bottom span-right'
+Pass	Property position-area value 'span-right y-start'
+Pass	Property position-area value 'y-start span-right'
+Pass	Property position-area value 'span-right y-end'
+Pass	Property position-area value 'y-end span-right'
+Pass	Property position-area value 'span-right span-y-start'
+Pass	Property position-area value 'span-y-start span-right'
+Pass	Property position-area value 'span-right span-y-end'
+Pass	Property position-area value 'span-y-end span-right'
+Pass	Property position-area value 'span-right y-self-start'
+Pass	Property position-area value 'y-self-start span-right'
+Pass	Property position-area value 'span-right y-self-end'
+Pass	Property position-area value 'y-self-end span-right'
+Pass	Property position-area value 'span-right span-y-self-start'
+Pass	Property position-area value 'span-y-self-start span-right'
+Pass	Property position-area value 'span-right span-y-self-end'
+Pass	Property position-area value 'span-y-self-end span-right'
+Pass	Property position-area value 'x-start top'
+Pass	Property position-area value 'top x-start'
+Pass	Property position-area value 'x-start bottom'
+Pass	Property position-area value 'bottom x-start'
+Pass	Property position-area value 'x-start span-top'
+Pass	Property position-area value 'span-top x-start'
+Pass	Property position-area value 'x-start span-bottom'
+Pass	Property position-area value 'span-bottom x-start'
+Pass	Property position-area value 'x-start y-start'
+Pass	Property position-area value 'y-start x-start'
+Pass	Property position-area value 'x-start y-end'
+Pass	Property position-area value 'y-end x-start'
+Pass	Property position-area value 'x-start span-y-start'
+Pass	Property position-area value 'span-y-start x-start'
+Pass	Property position-area value 'x-start span-y-end'
+Pass	Property position-area value 'span-y-end x-start'
+Pass	Property position-area value 'x-start y-self-start'
+Pass	Property position-area value 'y-self-start x-start'
+Pass	Property position-area value 'x-start y-self-end'
+Pass	Property position-area value 'y-self-end x-start'
+Pass	Property position-area value 'x-start span-y-self-start'
+Pass	Property position-area value 'span-y-self-start x-start'
+Pass	Property position-area value 'x-start span-y-self-end'
+Pass	Property position-area value 'span-y-self-end x-start'
+Pass	Property position-area value 'x-end top'
+Pass	Property position-area value 'top x-end'
+Pass	Property position-area value 'x-end bottom'
+Pass	Property position-area value 'bottom x-end'
+Pass	Property position-area value 'x-end span-top'
+Pass	Property position-area value 'span-top x-end'
+Pass	Property position-area value 'x-end span-bottom'
+Pass	Property position-area value 'span-bottom x-end'
+Pass	Property position-area value 'x-end y-start'
+Pass	Property position-area value 'y-start x-end'
+Pass	Property position-area value 'x-end y-end'
+Pass	Property position-area value 'y-end x-end'
+Pass	Property position-area value 'x-end span-y-start'
+Pass	Property position-area value 'span-y-start x-end'
+Pass	Property position-area value 'x-end span-y-end'
+Pass	Property position-area value 'span-y-end x-end'
+Pass	Property position-area value 'x-end y-self-start'
+Pass	Property position-area value 'y-self-start x-end'
+Pass	Property position-area value 'x-end y-self-end'
+Pass	Property position-area value 'y-self-end x-end'
+Pass	Property position-area value 'x-end span-y-self-start'
+Pass	Property position-area value 'span-y-self-start x-end'
+Pass	Property position-area value 'x-end span-y-self-end'
+Pass	Property position-area value 'span-y-self-end x-end'
+Pass	Property position-area value 'span-x-start top'
+Pass	Property position-area value 'top span-x-start'
+Pass	Property position-area value 'span-x-start bottom'
+Pass	Property position-area value 'bottom span-x-start'
+Pass	Property position-area value 'span-x-start span-top'
+Pass	Property position-area value 'span-top span-x-start'
+Pass	Property position-area value 'span-x-start span-bottom'
+Pass	Property position-area value 'span-bottom span-x-start'
+Pass	Property position-area value 'span-x-start y-start'
+Pass	Property position-area value 'y-start span-x-start'
+Pass	Property position-area value 'span-x-start y-end'
+Pass	Property position-area value 'y-end span-x-start'
+Pass	Property position-area value 'span-x-start span-y-start'
+Pass	Property position-area value 'span-y-start span-x-start'
+Pass	Property position-area value 'span-x-start span-y-end'
+Pass	Property position-area value 'span-y-end span-x-start'
+Pass	Property position-area value 'span-x-start y-self-start'
+Pass	Property position-area value 'y-self-start span-x-start'
+Pass	Property position-area value 'span-x-start y-self-end'
+Pass	Property position-area value 'y-self-end span-x-start'
+Pass	Property position-area value 'span-x-start span-y-self-start'
+Pass	Property position-area value 'span-y-self-start span-x-start'
+Pass	Property position-area value 'span-x-start span-y-self-end'
+Pass	Property position-area value 'span-y-self-end span-x-start'
+Pass	Property position-area value 'span-x-end top'
+Pass	Property position-area value 'top span-x-end'
+Pass	Property position-area value 'span-x-end bottom'
+Pass	Property position-area value 'bottom span-x-end'
+Pass	Property position-area value 'span-x-end span-top'
+Pass	Property position-area value 'span-top span-x-end'
+Pass	Property position-area value 'span-x-end span-bottom'
+Pass	Property position-area value 'span-bottom span-x-end'
+Pass	Property position-area value 'span-x-end y-start'
+Pass	Property position-area value 'y-start span-x-end'
+Pass	Property position-area value 'span-x-end y-end'
+Pass	Property position-area value 'y-end span-x-end'
+Pass	Property position-area value 'span-x-end span-y-start'
+Pass	Property position-area value 'span-y-start span-x-end'
+Pass	Property position-area value 'span-x-end span-y-end'
+Pass	Property position-area value 'span-y-end span-x-end'
+Pass	Property position-area value 'span-x-end y-self-start'
+Pass	Property position-area value 'y-self-start span-x-end'
+Pass	Property position-area value 'span-x-end y-self-end'
+Pass	Property position-area value 'y-self-end span-x-end'
+Pass	Property position-area value 'span-x-end span-y-self-start'
+Pass	Property position-area value 'span-y-self-start span-x-end'
+Pass	Property position-area value 'span-x-end span-y-self-end'
+Pass	Property position-area value 'span-y-self-end span-x-end'
+Pass	Property position-area value 'x-self-start top'
+Pass	Property position-area value 'top x-self-start'
+Pass	Property position-area value 'x-self-start bottom'
+Pass	Property position-area value 'bottom x-self-start'
+Pass	Property position-area value 'x-self-start span-top'
+Pass	Property position-area value 'span-top x-self-start'
+Pass	Property position-area value 'x-self-start span-bottom'
+Pass	Property position-area value 'span-bottom x-self-start'
+Pass	Property position-area value 'x-self-start y-start'
+Pass	Property position-area value 'y-start x-self-start'
+Pass	Property position-area value 'x-self-start y-end'
+Pass	Property position-area value 'y-end x-self-start'
+Pass	Property position-area value 'x-self-start span-y-start'
+Pass	Property position-area value 'span-y-start x-self-start'
+Pass	Property position-area value 'x-self-start span-y-end'
+Pass	Property position-area value 'span-y-end x-self-start'
+Pass	Property position-area value 'x-self-start y-self-start'
+Pass	Property position-area value 'y-self-start x-self-start'
+Pass	Property position-area value 'x-self-start y-self-end'
+Pass	Property position-area value 'y-self-end x-self-start'
+Pass	Property position-area value 'x-self-start span-y-self-start'
+Pass	Property position-area value 'span-y-self-start x-self-start'
+Pass	Property position-area value 'x-self-start span-y-self-end'
+Pass	Property position-area value 'span-y-self-end x-self-start'
+Pass	Property position-area value 'x-self-end top'
+Pass	Property position-area value 'top x-self-end'
+Pass	Property position-area value 'x-self-end bottom'
+Pass	Property position-area value 'bottom x-self-end'
+Pass	Property position-area value 'x-self-end span-top'
+Pass	Property position-area value 'span-top x-self-end'
+Pass	Property position-area value 'x-self-end span-bottom'
+Pass	Property position-area value 'span-bottom x-self-end'
+Pass	Property position-area value 'x-self-end y-start'
+Pass	Property position-area value 'y-start x-self-end'
+Pass	Property position-area value 'x-self-end y-end'
+Pass	Property position-area value 'y-end x-self-end'
+Pass	Property position-area value 'x-self-end span-y-start'
+Pass	Property position-area value 'span-y-start x-self-end'
+Pass	Property position-area value 'x-self-end span-y-end'
+Pass	Property position-area value 'span-y-end x-self-end'
+Pass	Property position-area value 'x-self-end y-self-start'
+Pass	Property position-area value 'y-self-start x-self-end'
+Pass	Property position-area value 'x-self-end y-self-end'
+Pass	Property position-area value 'y-self-end x-self-end'
+Pass	Property position-area value 'x-self-end span-y-self-start'
+Pass	Property position-area value 'span-y-self-start x-self-end'
+Pass	Property position-area value 'x-self-end span-y-self-end'
+Pass	Property position-area value 'span-y-self-end x-self-end'
+Pass	Property position-area value 'span-x-self-start top'
+Pass	Property position-area value 'top span-x-self-start'
+Pass	Property position-area value 'span-x-self-start bottom'
+Pass	Property position-area value 'bottom span-x-self-start'
+Pass	Property position-area value 'span-x-self-start span-top'
+Pass	Property position-area value 'span-top span-x-self-start'
+Pass	Property position-area value 'span-x-self-start span-bottom'
+Pass	Property position-area value 'span-bottom span-x-self-start'
+Pass	Property position-area value 'span-x-self-start y-start'
+Pass	Property position-area value 'y-start span-x-self-start'
+Pass	Property position-area value 'span-x-self-start y-end'
+Pass	Property position-area value 'y-end span-x-self-start'
+Pass	Property position-area value 'span-x-self-start span-y-start'
+Pass	Property position-area value 'span-y-start span-x-self-start'
+Pass	Property position-area value 'span-x-self-start span-y-end'
+Pass	Property position-area value 'span-y-end span-x-self-start'
+Pass	Property position-area value 'span-x-self-start y-self-start'
+Pass	Property position-area value 'y-self-start span-x-self-start'
+Pass	Property position-area value 'span-x-self-start y-self-end'
+Pass	Property position-area value 'y-self-end span-x-self-start'
+Pass	Property position-area value 'span-x-self-start span-y-self-start'
+Pass	Property position-area value 'span-y-self-start span-x-self-start'
+Pass	Property position-area value 'span-x-self-start span-y-self-end'
+Pass	Property position-area value 'span-y-self-end span-x-self-start'
+Pass	Property position-area value 'span-x-self-end top'
+Pass	Property position-area value 'top span-x-self-end'
+Pass	Property position-area value 'span-x-self-end bottom'
+Pass	Property position-area value 'bottom span-x-self-end'
+Pass	Property position-area value 'span-x-self-end span-top'
+Pass	Property position-area value 'span-top span-x-self-end'
+Pass	Property position-area value 'span-x-self-end span-bottom'
+Pass	Property position-area value 'span-bottom span-x-self-end'
+Pass	Property position-area value 'span-x-self-end y-start'
+Pass	Property position-area value 'y-start span-x-self-end'
+Pass	Property position-area value 'span-x-self-end y-end'
+Pass	Property position-area value 'y-end span-x-self-end'
+Pass	Property position-area value 'span-x-self-end span-y-start'
+Pass	Property position-area value 'span-y-start span-x-self-end'
+Pass	Property position-area value 'span-x-self-end span-y-end'
+Pass	Property position-area value 'span-y-end span-x-self-end'
+Pass	Property position-area value 'span-x-self-end y-self-start'
+Pass	Property position-area value 'y-self-start span-x-self-end'
+Pass	Property position-area value 'span-x-self-end y-self-end'
+Pass	Property position-area value 'y-self-end span-x-self-end'
+Pass	Property position-area value 'span-x-self-end span-y-self-start'
+Pass	Property position-area value 'span-y-self-start span-x-self-end'
+Pass	Property position-area value 'span-x-self-end span-y-self-end'
+Pass	Property position-area value 'span-y-self-end span-x-self-end'
+Pass	Property position-area value 'left span-all'
+Pass	Property position-area value 'span-all left'
+Pass	Property position-area value 'left center'
+Pass	Property position-area value 'center left'
+Pass	Property position-area value 'right span-all'
+Pass	Property position-area value 'span-all right'
+Pass	Property position-area value 'right center'
+Pass	Property position-area value 'center right'
+Pass	Property position-area value 'span-left span-all'
+Pass	Property position-area value 'span-all span-left'
+Pass	Property position-area value 'span-left center'
+Pass	Property position-area value 'center span-left'
+Pass	Property position-area value 'span-right span-all'
+Pass	Property position-area value 'span-all span-right'
+Pass	Property position-area value 'span-right center'
+Pass	Property position-area value 'center span-right'
+Pass	Property position-area value 'x-start span-all'
+Pass	Property position-area value 'span-all x-start'
+Pass	Property position-area value 'x-start center'
+Pass	Property position-area value 'center x-start'
+Pass	Property position-area value 'x-end span-all'
+Pass	Property position-area value 'span-all x-end'
+Pass	Property position-area value 'x-end center'
+Pass	Property position-area value 'center x-end'
+Pass	Property position-area value 'span-x-start span-all'
+Pass	Property position-area value 'span-all span-x-start'
+Pass	Property position-area value 'span-x-start center'
+Pass	Property position-area value 'center span-x-start'
+Pass	Property position-area value 'span-x-end span-all'
+Pass	Property position-area value 'span-all span-x-end'
+Pass	Property position-area value 'span-x-end center'
+Pass	Property position-area value 'center span-x-end'
+Pass	Property position-area value 'x-self-start span-all'
+Pass	Property position-area value 'span-all x-self-start'
+Pass	Property position-area value 'x-self-start center'
+Pass	Property position-area value 'center x-self-start'
+Pass	Property position-area value 'x-self-end span-all'
+Pass	Property position-area value 'span-all x-self-end'
+Pass	Property position-area value 'x-self-end center'
+Pass	Property position-area value 'center x-self-end'
+Pass	Property position-area value 'span-x-self-start span-all'
+Pass	Property position-area value 'span-all span-x-self-start'
+Pass	Property position-area value 'span-x-self-start center'
+Pass	Property position-area value 'center span-x-self-start'
+Pass	Property position-area value 'span-x-self-end span-all'
+Pass	Property position-area value 'span-all span-x-self-end'
+Pass	Property position-area value 'span-x-self-end center'
+Pass	Property position-area value 'center span-x-self-end'
+Pass	Property position-area value 'span-all top'
+Pass	Property position-area value 'top span-all'
+Pass	Property position-area value 'center top'
+Pass	Property position-area value 'top center'
+Pass	Property position-area value 'span-all bottom'
+Pass	Property position-area value 'bottom span-all'
+Pass	Property position-area value 'center bottom'
+Pass	Property position-area value 'bottom center'
+Pass	Property position-area value 'span-all span-top'
+Pass	Property position-area value 'span-top span-all'
+Pass	Property position-area value 'center span-top'
+Pass	Property position-area value 'span-top center'
+Pass	Property position-area value 'span-all span-bottom'
+Pass	Property position-area value 'span-bottom span-all'
+Pass	Property position-area value 'center span-bottom'
+Pass	Property position-area value 'span-bottom center'
+Pass	Property position-area value 'span-all y-start'
+Pass	Property position-area value 'y-start span-all'
+Pass	Property position-area value 'center y-start'
+Pass	Property position-area value 'y-start center'
+Pass	Property position-area value 'span-all y-end'
+Pass	Property position-area value 'y-end span-all'
+Pass	Property position-area value 'center y-end'
+Pass	Property position-area value 'y-end center'
+Pass	Property position-area value 'span-all span-y-start'
+Pass	Property position-area value 'span-y-start span-all'
+Pass	Property position-area value 'center span-y-start'
+Pass	Property position-area value 'span-y-start center'
+Pass	Property position-area value 'span-all span-y-end'
+Pass	Property position-area value 'span-y-end span-all'
+Pass	Property position-area value 'center span-y-end'
+Pass	Property position-area value 'span-y-end center'
+Pass	Property position-area value 'span-all y-self-start'
+Pass	Property position-area value 'y-self-start span-all'
+Pass	Property position-area value 'center y-self-start'
+Pass	Property position-area value 'y-self-start center'
+Pass	Property position-area value 'span-all y-self-end'
+Pass	Property position-area value 'y-self-end span-all'
+Pass	Property position-area value 'center y-self-end'
+Pass	Property position-area value 'y-self-end center'
+Pass	Property position-area value 'span-all span-y-self-start'
+Pass	Property position-area value 'span-y-self-start span-all'
+Pass	Property position-area value 'center span-y-self-start'
+Pass	Property position-area value 'span-y-self-start center'
+Pass	Property position-area value 'span-all span-y-self-end'
+Pass	Property position-area value 'span-y-self-end span-all'
+Pass	Property position-area value 'center span-y-self-end'
+Pass	Property position-area value 'span-y-self-end center'
+Pass	Property position-area value 'block-start inline-start'
+Pass	Property position-area value 'inline-start block-start'
+Pass	Property position-area value 'block-start inline-end'
+Pass	Property position-area value 'inline-end block-start'
+Pass	Property position-area value 'block-start span-inline-start'
+Pass	Property position-area value 'span-inline-start block-start'
+Pass	Property position-area value 'block-start span-inline-end'
+Pass	Property position-area value 'span-inline-end block-start'
+Pass	Property position-area value 'block-end inline-start'
+Pass	Property position-area value 'inline-start block-end'
+Pass	Property position-area value 'block-end inline-end'
+Pass	Property position-area value 'inline-end block-end'
+Pass	Property position-area value 'block-end span-inline-start'
+Pass	Property position-area value 'span-inline-start block-end'
+Pass	Property position-area value 'block-end span-inline-end'
+Pass	Property position-area value 'span-inline-end block-end'
+Pass	Property position-area value 'span-block-start inline-start'
+Pass	Property position-area value 'inline-start span-block-start'
+Pass	Property position-area value 'span-block-start inline-end'
+Pass	Property position-area value 'inline-end span-block-start'
+Pass	Property position-area value 'span-block-start span-inline-start'
+Pass	Property position-area value 'span-inline-start span-block-start'
+Pass	Property position-area value 'span-block-start span-inline-end'
+Pass	Property position-area value 'span-inline-end span-block-start'
+Pass	Property position-area value 'span-block-end inline-start'
+Pass	Property position-area value 'inline-start span-block-end'
+Pass	Property position-area value 'span-block-end inline-end'
+Pass	Property position-area value 'inline-end span-block-end'
+Pass	Property position-area value 'span-block-end span-inline-start'
+Pass	Property position-area value 'span-inline-start span-block-end'
+Pass	Property position-area value 'span-block-end span-inline-end'
+Pass	Property position-area value 'span-inline-end span-block-end'
+Pass	Property position-area value 'block-start span-all'
+Pass	Property position-area value 'span-all block-start'
+Pass	Property position-area value 'block-start center'
+Pass	Property position-area value 'center block-start'
+Pass	Property position-area value 'block-end span-all'
+Pass	Property position-area value 'span-all block-end'
+Pass	Property position-area value 'block-end center'
+Pass	Property position-area value 'center block-end'
+Pass	Property position-area value 'span-block-start span-all'
+Pass	Property position-area value 'span-all span-block-start'
+Pass	Property position-area value 'span-block-start center'
+Pass	Property position-area value 'center span-block-start'
+Pass	Property position-area value 'span-block-end span-all'
+Pass	Property position-area value 'span-all span-block-end'
+Pass	Property position-area value 'span-block-end center'
+Pass	Property position-area value 'center span-block-end'
+Pass	Property position-area value 'inline-start span-all'
+Pass	Property position-area value 'span-all inline-start'
+Pass	Property position-area value 'inline-start center'
+Pass	Property position-area value 'center inline-start'
+Pass	Property position-area value 'inline-end span-all'
+Pass	Property position-area value 'span-all inline-end'
+Pass	Property position-area value 'inline-end center'
+Pass	Property position-area value 'center inline-end'
+Pass	Property position-area value 'span-inline-start span-all'
+Pass	Property position-area value 'span-all span-inline-start'
+Pass	Property position-area value 'span-inline-start center'
+Pass	Property position-area value 'center span-inline-start'
+Pass	Property position-area value 'span-inline-end span-all'
+Pass	Property position-area value 'span-all span-inline-end'
+Pass	Property position-area value 'span-inline-end center'
+Pass	Property position-area value 'center span-inline-end'
+Pass	Property position-area value 'self-block-start self-inline-start'
+Pass	Property position-area value 'self-inline-start self-block-start'
+Pass	Property position-area value 'self-block-start self-inline-end'
+Pass	Property position-area value 'self-inline-end self-block-start'
+Pass	Property position-area value 'self-block-start span-self-inline-start'
+Pass	Property position-area value 'span-self-inline-start self-block-start'
+Pass	Property position-area value 'self-block-start span-self-inline-end'
+Pass	Property position-area value 'span-self-inline-end self-block-start'
+Pass	Property position-area value 'self-block-end self-inline-start'
+Pass	Property position-area value 'self-inline-start self-block-end'
+Pass	Property position-area value 'self-block-end self-inline-end'
+Pass	Property position-area value 'self-inline-end self-block-end'
+Pass	Property position-area value 'self-block-end span-self-inline-start'
+Pass	Property position-area value 'span-self-inline-start self-block-end'
+Pass	Property position-area value 'self-block-end span-self-inline-end'
+Pass	Property position-area value 'span-self-inline-end self-block-end'
+Pass	Property position-area value 'span-self-block-start self-inline-start'
+Pass	Property position-area value 'self-inline-start span-self-block-start'
+Pass	Property position-area value 'span-self-block-start self-inline-end'
+Pass	Property position-area value 'self-inline-end span-self-block-start'
+Pass	Property position-area value 'span-self-block-start span-self-inline-start'
+Pass	Property position-area value 'span-self-inline-start span-self-block-start'
+Pass	Property position-area value 'span-self-block-start span-self-inline-end'
+Pass	Property position-area value 'span-self-inline-end span-self-block-start'
+Pass	Property position-area value 'span-self-block-end self-inline-start'
+Pass	Property position-area value 'self-inline-start span-self-block-end'
+Pass	Property position-area value 'span-self-block-end self-inline-end'
+Pass	Property position-area value 'self-inline-end span-self-block-end'
+Pass	Property position-area value 'span-self-block-end span-self-inline-start'
+Pass	Property position-area value 'span-self-inline-start span-self-block-end'
+Pass	Property position-area value 'span-self-block-end span-self-inline-end'
+Pass	Property position-area value 'span-self-inline-end span-self-block-end'
+Pass	Property position-area value 'self-block-start span-all'
+Pass	Property position-area value 'span-all self-block-start'
+Pass	Property position-area value 'self-block-start center'
+Pass	Property position-area value 'center self-block-start'
+Pass	Property position-area value 'self-block-end span-all'
+Pass	Property position-area value 'span-all self-block-end'
+Pass	Property position-area value 'self-block-end center'
+Pass	Property position-area value 'center self-block-end'
+Pass	Property position-area value 'span-self-block-start span-all'
+Pass	Property position-area value 'span-all span-self-block-start'
+Pass	Property position-area value 'span-self-block-start center'
+Pass	Property position-area value 'center span-self-block-start'
+Pass	Property position-area value 'span-self-block-end span-all'
+Pass	Property position-area value 'span-all span-self-block-end'
+Pass	Property position-area value 'span-self-block-end center'
+Pass	Property position-area value 'center span-self-block-end'
+Pass	Property position-area value 'self-inline-start span-all'
+Pass	Property position-area value 'span-all self-inline-start'
+Pass	Property position-area value 'self-inline-start center'
+Pass	Property position-area value 'center self-inline-start'
+Pass	Property position-area value 'self-inline-end span-all'
+Pass	Property position-area value 'span-all self-inline-end'
+Pass	Property position-area value 'self-inline-end center'
+Pass	Property position-area value 'center self-inline-end'
+Pass	Property position-area value 'span-self-inline-start span-all'
+Pass	Property position-area value 'span-all span-self-inline-start'
+Pass	Property position-area value 'span-self-inline-start center'
+Pass	Property position-area value 'center span-self-inline-start'
+Pass	Property position-area value 'span-self-inline-end span-all'
+Pass	Property position-area value 'span-all span-self-inline-end'
+Pass	Property position-area value 'span-self-inline-end center'
+Pass	Property position-area value 'center span-self-inline-end'
+Pass	Property position-area value 'start start'
+Pass	Property position-area value 'start end'
+Pass	Property position-area value 'start span-start'
+Pass	Property position-area value 'start span-end'
+Pass	Property position-area value 'end start'
+Pass	Property position-area value 'end end'
+Pass	Property position-area value 'end span-start'
+Pass	Property position-area value 'end span-end'
+Pass	Property position-area value 'span-start start'
+Pass	Property position-area value 'span-start end'
+Pass	Property position-area value 'span-start span-start'
+Pass	Property position-area value 'span-start span-end'
+Pass	Property position-area value 'span-end start'
+Pass	Property position-area value 'span-end end'
+Pass	Property position-area value 'span-end span-start'
+Pass	Property position-area value 'span-end span-end'
+Pass	Property position-area value 'start span-all'
+Pass	Property position-area value 'span-all start'
+Pass	Property position-area value 'start center'
+Pass	Property position-area value 'center start'
+Pass	Property position-area value 'end span-all'
+Pass	Property position-area value 'span-all end'
+Pass	Property position-area value 'end center'
+Pass	Property position-area value 'center end'
+Pass	Property position-area value 'span-start span-all'
+Pass	Property position-area value 'span-all span-start'
+Pass	Property position-area value 'span-start center'
+Pass	Property position-area value 'center span-start'
+Pass	Property position-area value 'span-end span-all'
+Pass	Property position-area value 'span-all span-end'
+Pass	Property position-area value 'span-end center'
+Pass	Property position-area value 'center span-end'
+Pass	Property position-area value 'self-start self-start'
+Pass	Property position-area value 'self-start self-end'
+Pass	Property position-area value 'self-start span-self-start'
+Pass	Property position-area value 'self-start span-self-end'
+Pass	Property position-area value 'self-end self-start'
+Pass	Property position-area value 'self-end self-end'
+Pass	Property position-area value 'self-end span-self-start'
+Pass	Property position-area value 'self-end span-self-end'
+Pass	Property position-area value 'span-self-start self-start'
+Pass	Property position-area value 'span-self-start self-end'
+Pass	Property position-area value 'span-self-start span-self-start'
+Pass	Property position-area value 'span-self-start span-self-end'
+Pass	Property position-area value 'span-self-end self-start'
+Pass	Property position-area value 'span-self-end self-end'
+Pass	Property position-area value 'span-self-end span-self-start'
+Pass	Property position-area value 'span-self-end span-self-end'
+Pass	Property position-area value 'self-start span-all'
+Pass	Property position-area value 'span-all self-start'
+Pass	Property position-area value 'self-start center'
+Pass	Property position-area value 'center self-start'
+Pass	Property position-area value 'self-end span-all'
+Pass	Property position-area value 'span-all self-end'
+Pass	Property position-area value 'self-end center'
+Pass	Property position-area value 'center self-end'
+Pass	Property position-area value 'span-self-start span-all'
+Pass	Property position-area value 'span-all span-self-start'
+Pass	Property position-area value 'span-self-start center'
+Pass	Property position-area value 'center span-self-start'
+Pass	Property position-area value 'span-self-end span-all'
+Pass	Property position-area value 'span-all span-self-end'
+Pass	Property position-area value 'span-self-end center'
+Pass	Property position-area value 'center span-self-end'
+Pass	Property position-area value 'span-all span-all'
+Pass	Property position-area value 'span-all center'
+Pass	Property position-area value 'center span-all'
+Pass	Property position-area value 'center center'
+Pass	Property position-area has initial value none
+Pass	Property position-area does not inherit
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/css-anchor-position/position-area-computed.html b/Tests/LibWeb/Text/input/wpt-import/css/css-anchor-position/position-area-computed.html
new file mode 100644
index 00000000000..d9fc5d81a71
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/css-anchor-position/position-area-computed.html
@@ -0,0 +1,197 @@
+<!DOCTYPE html>
+<title>CSS Anchor Positioning: position-area getComputedStyle()</title>
+<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#position-area-computed">
+<script src="../../resources/testharness.js"></script>
+<script src="../../resources/testharnessreport.js"></script>
+<script src="../../css/support/computed-testcommon.js"></script>
+<script src="../../css/support/inheritance-testcommon.js"></script>
+<div id="container">
+  <div id="target"></div>
+</div>
+<script>
+  // Keywords that refer to the physical horizontal/vertical axes.
+
+  const horizontal = [
+    "left",
+    "right",
+    "span-left",
+    "span-right",
+    "x-start",
+    "x-end",
+    "span-x-start",
+    "span-x-end",
+    "x-self-start",
+    "x-self-end",
+    "span-x-self-start",
+    "span-x-self-end"
+  ];
+
+  const vertical = [
+    "top",
+    "bottom",
+    "span-top",
+    "span-bottom",
+    "y-start",
+    "y-end",
+    "span-y-start",
+    "span-y-end",
+    "y-self-start",
+    "y-self-end",
+    "span-y-self-start",
+    "span-y-self-end"
+  ];
+
+  // Keywords that refer to the logical block/inline axis.
+  // Key is the full form of the keyword, value is the equivalent reduced keyword.
+
+  const inline = {
+    "inline-start": "start",
+    "inline-end": "end",
+    "span-inline-start": "span-start",
+    "span-inline-end": "span-end",
+  }
+
+  const block = {
+    "block-start": "start",
+    "block-end": "end",
+    "span-block-start": "span-start",
+    "span-block-end": "span-end",
+  }
+
+  const self_inline = {
+    "self-inline-start": "self-start",
+    "self-inline-end": "self-end",
+    "span-self-inline-start": "span-self-start",
+    "span-self-inline-end": "span-self-end",
+  }
+
+  const self_block = {
+    "self-block-start": "self-start",
+    "self-block-end": "self-end",
+    "span-self-block-start": "span-self-start",
+    "span-self-block-end": "span-self-end",
+  }
+
+  // Keywords that refer to an ambiguous axis.
+  // Key is the keyword, value is the equivalent keyword if the original keyword refers
+  // to a block or inline axis.
+
+  const start_end = {
+    "start": { "block": "block-start", "inline": "inline-start" },
+    "end": { "block": "block-end", "inline": "inline-end" },
+    "span-start": { "block": "span-block-start", "inline": "span-inline-start" },
+    "span-end": { "block": "span-block-end", "inline": "span-inline-end" },
+  };
+
+  const self_start_end = {
+    "self-start": { "block": "self-block-start", "inline": "self-inline-start" },
+    "self-end": { "block": "self-block-end", "inline": "self-inline-end" },
+    "span-self-start": { "block": "span-self-block-start", "inline": "span-self-inline-start" },
+    "span-self-end": { "block": "span-self-block-end", "inline": "span-self-inline-end" },
+  };
+
+  function test_single_keyword(keywords) {
+    for (const keyword of keywords)
+      test_computed_value("position-area", keyword);
+  }
+
+  function test_physical_keywords(horizontal_keywords, vertical_keywords) {
+    for (const horizontal of horizontal_keywords) {
+      for (const vertical of vertical_keywords) {
+        test_computed_value("position-area", `${horizontal} ${vertical}`);
+        test_computed_value("position-area", `${vertical} ${horizontal}`, `${horizontal} ${vertical}`);
+      }
+    }
+
+    for (const keyword of horizontal_keywords) {
+      test_computed_value("position-area", `${keyword} span-all`, keyword);
+      test_computed_value("position-area", `span-all ${keyword}`, keyword);
+
+      test_computed_value("position-area", `${keyword} center`);
+      test_computed_value("position-area", `center ${keyword}`, `${keyword} center`);
+    }
+
+    for (const keyword of vertical_keywords) {
+      test_computed_value("position-area", `span-all ${keyword}`, keyword);
+      test_computed_value("position-area", `${keyword} span-all`, keyword);
+
+      test_computed_value("position-area", `center ${keyword}`);
+      test_computed_value("position-area", `${keyword} center`, `center ${keyword}`);
+    }
+  }
+
+  function test_unambiguous_logical_keywords(block_keywords, inline_keywords) {
+    for (const [block_long_keyword, block_short_keyword] of Object.entries(block_keywords)) {
+      for (const [inline_long_keyword, inline_short_keyword] of Object.entries(inline_keywords)) {
+        let expected_computed = `${block_short_keyword} ${inline_short_keyword}`;
+        if (block_short_keyword == inline_short_keyword)
+          expected_computed = block_short_keyword;
+
+        test_computed_value("position-area", `${block_long_keyword} ${inline_long_keyword}`, expected_computed);
+        test_computed_value("position-area", `${inline_long_keyword} ${block_long_keyword}`, expected_computed);
+      }
+    }
+
+    for (const [long_keyword, short_keyword] of Object.entries(block_keywords)) {
+      test_computed_value("position-area", `${long_keyword} span-all`, long_keyword);
+      test_computed_value("position-area", `span-all ${long_keyword}`, long_keyword);
+
+      test_computed_value("position-area", `${long_keyword} center`, `${short_keyword} center`);
+      test_computed_value("position-area", `center ${long_keyword}`, `${short_keyword} center`);
+    }
+
+    for (const [long_keyword, short_keyword] of Object.entries(inline_keywords)) {
+      test_computed_value("position-area", `${long_keyword} span-all`, long_keyword);
+      test_computed_value("position-area", `span-all ${long_keyword}`, long_keyword);
+
+      test_computed_value("position-area", `${long_keyword} center`, `center ${short_keyword}`);
+      test_computed_value("position-area", `center ${long_keyword}`, `center ${short_keyword}`);
+    }
+  }
+
+  function test_ambiguous_logical_keywords(keywords) {
+    for (const keyword1 of Object.keys(keywords)) {
+      for (const keyword2 of Object.keys(keywords)) {
+        if (keyword1 == keyword2)
+          test_computed_value("position-area", `${keyword1} ${keyword2}`, `${keyword1}`);
+        else
+          test_computed_value("position-area", `${keyword1} ${keyword2}`);
+      }
+    }
+
+    for (const [keyword, { block: block_keyword, inline: inline_keyword }] of Object.entries(keywords)) {
+      test_computed_value("position-area", `${keyword} span-all`, block_keyword);
+      test_computed_value("position-area", `span-all ${keyword}`, inline_keyword);
+
+      test_computed_value("position-area", `${keyword} center`);
+      test_computed_value("position-area", `center ${keyword}`);
+    };
+  }
+
+  // Test computed value when position-area is a single keyword.
+  test_computed_value("position-area", "none");
+  test_computed_value("position-area", "span-all");
+  test_computed_value("position-area", "center");
+  test_single_keyword(horizontal);
+  test_single_keyword(vertical);
+  test_single_keyword(Object.keys(inline));
+  test_single_keyword(Object.keys(block));
+  test_single_keyword(Object.keys(self_inline));
+  test_single_keyword(Object.keys(self_block));
+  test_single_keyword(Object.keys(start_end));
+  test_single_keyword(Object.keys(self_start_end));
+
+  // Test computed value when position-area are two keywords.
+  test_physical_keywords(horizontal, vertical);
+  test_unambiguous_logical_keywords(block, inline);
+  test_unambiguous_logical_keywords(self_block, self_inline);
+  test_ambiguous_logical_keywords(start_end);
+  test_ambiguous_logical_keywords(self_start_end);
+
+  test_computed_value("position-area", "span-all span-all", "span-all");
+  test_computed_value("position-area", "span-all center");
+  test_computed_value("position-area", "center span-all");
+  test_computed_value("position-area", "center center", "center");
+
+  assert_not_inherited("position-area", "none", "span-all");
+</script>
\ No newline at end of file