diff --git a/Libraries/LibWeb/Layout/LineBuilder.cpp b/Libraries/LibWeb/Layout/LineBuilder.cpp
index 89f16e12bf3..8e20618e6db 100644
--- a/Libraries/LibWeb/Layout/LineBuilder.cpp
+++ b/Libraries/LibWeb/Layout/LineBuilder.cpp
@@ -327,9 +327,14 @@ void LineBuilder::update_last_line()
                 auto const x_height = CSSPixels::nearest_value_for(m_context.containing_block().first_available_font().pixel_metrics().x_height);
                 return m_current_block_offset + line_box_baseline + ((effective_box_top_offset - effective_box_bottom_offset - x_height - fragment.height()) / 2);
             }
+            case CSS::VerticalAlign::Super:
+                // https://drafts.csswg.org/css-inline/#valdef-baseline-shift-super
+                // Raise by the offset appropriate for superscripts of the parent’s box.
+                // The UA may use the parent’s font metrics to find this offset; otherwise it defaults to raising by one third of the parent’s used font-size.
+                // FIXME: Use font metrics to find a more appropriate offset, if possible
+                return alphabetic_baseline - m_context.containing_block().computed_values().font_size() / 3;
             case CSS::VerticalAlign::Bottom:
             case CSS::VerticalAlign::Sub:
-            case CSS::VerticalAlign::Super:
             case CSS::VerticalAlign::TextBottom:
             case CSS::VerticalAlign::TextTop:
                 // FIXME: These are all 'baseline'