diff --git a/Libraries/LibWeb/Layout/LayoutTableRow.cpp b/Libraries/LibWeb/Layout/LayoutTableRow.cpp
index e241e642de..e571d398f1 100644
--- a/Libraries/LibWeb/Layout/LayoutTableRow.cpp
+++ b/Libraries/LibWeb/Layout/LayoutTableRow.cpp
@@ -41,12 +41,30 @@ LayoutTableRow::~LayoutTableRow()
 
 void LayoutTableRow::layout(LayoutMode)
 {
-    float tallest_cell_height = 0;
-    float content_width = 0;
+}
+
+void LayoutTableRow::calculate_column_widths(Vector<float>& column_widths)
+{
+    size_t column_index = 0;
     for_each_child_of_type<LayoutTableCell>([&](auto& cell) {
         cell.layout(LayoutMode::OnlyRequiredLineBreaks);
+        column_widths[column_index] = max(column_widths[column_index], cell.width());
+        column_index += cell.colspan();
+    });
+}
+
+void LayoutTableRow::layout_row(const Vector<float>& column_widths)
+{
+    size_t column_index = 0;
+    float tallest_cell_height = 0;
+    float content_width = 0;
+
+    for_each_child_of_type<LayoutTableCell>([&](auto& cell) {
         cell.set_offset(effective_offset().translated(content_width, 0));
-        content_width += cell.width();
+
+        size_t cell_colspan = cell.colspan();
+        for (size_t i = 0; i < cell_colspan; ++i)
+            content_width += column_widths[column_index++];
         tallest_cell_height = max(tallest_cell_height, cell.height());
     });
     set_width(content_width);
diff --git a/Libraries/LibWeb/Layout/LayoutTableRow.h b/Libraries/LibWeb/Layout/LayoutTableRow.h
index ded261d16f..fe88582587 100644
--- a/Libraries/LibWeb/Layout/LayoutTableRow.h
+++ b/Libraries/LibWeb/Layout/LayoutTableRow.h
@@ -37,7 +37,7 @@ public:
     LayoutTableRow(const Element&, NonnullRefPtr<StyleProperties>);
     virtual ~LayoutTableRow() override;
 
-    virtual void layout(LayoutMode = LayoutMode::Default) override;
+
 
     LayoutTableCell* first_cell();
     const LayoutTableCell* first_cell() const;
@@ -45,7 +45,11 @@ public:
     LayoutTableRow* next_row();
     const LayoutTableRow* next_row() const;
 
+    void layout_row(const Vector<float>& column_widths);
+    void calculate_column_widths(Vector<float>& column_widths);
+
 private:
+    virtual void layout(LayoutMode) override;
     virtual bool is_table_row() const override { return true; }
     virtual const char* class_name() const override { return "LayoutTableRow"; }
 };
diff --git a/Libraries/LibWeb/Layout/LayoutTableRowGroup.cpp b/Libraries/LibWeb/Layout/LayoutTableRowGroup.cpp
index 1ae56218a0..57db85120b 100644
--- a/Libraries/LibWeb/Layout/LayoutTableRowGroup.cpp
+++ b/Libraries/LibWeb/Layout/LayoutTableRowGroup.cpp
@@ -25,8 +25,9 @@
  */
 
 #include <LibWeb/DOM/Element.h>
-#include <LibWeb/Layout/LayoutTableRowGroup.h>
+#include <LibWeb/Layout/LayoutTableCell.h>
 #include <LibWeb/Layout/LayoutTableRow.h>
+#include <LibWeb/Layout/LayoutTableRowGroup.h>
 
 namespace Web {
 
@@ -39,18 +40,39 @@ LayoutTableRowGroup::~LayoutTableRowGroup()
 {
 }
 
-void LayoutTableRowGroup::layout(LayoutMode layout_mode)
+size_t LayoutTableRowGroup::column_count() const
+{
+    size_t table_column_count = 0;
+    for_each_child_of_type<LayoutTableRow>([&](auto& row) {
+        size_t row_column_count = 0;
+        row.template for_each_child_of_type<LayoutTableCell>([&](auto& cell) {
+            row_column_count += cell.colspan();
+        });
+        table_column_count = max(table_column_count, row_column_count);
+    });
+    return table_column_count;
+}
+
+void LayoutTableRowGroup::layout(LayoutMode)
 {
     compute_width();
 
     if (!is_inline())
         compute_position();
 
+    auto column_count = this->column_count();
+    Vector<float> column_widths;
+    column_widths.resize(column_count);
+
+    for_each_child_of_type<LayoutTableRow>([&](auto& row) {
+        row.calculate_column_widths(column_widths);
+    });
+
     float content_height = 0;
 
     for_each_child_of_type<LayoutTableRow>([&](auto& row) {
         row.set_offset(0, content_height);
-        row.layout(layout_mode);
+        row.layout_row(column_widths);
         content_height += row.height();
     });
 
diff --git a/Libraries/LibWeb/Layout/LayoutTableRowGroup.h b/Libraries/LibWeb/Layout/LayoutTableRowGroup.h
index f35f4571e7..ea535dc86d 100644
--- a/Libraries/LibWeb/Layout/LayoutTableRowGroup.h
+++ b/Libraries/LibWeb/Layout/LayoutTableRowGroup.h
@@ -38,6 +38,8 @@ public:
     virtual void layout(LayoutMode = LayoutMode::Default) override;
 
 private:
+    size_t column_count() const;
+
     virtual bool is_table_row_group() const override { return true; }
     virtual const char* class_name() const override { return "LayoutTableRowGroup"; }
 };