LibWeb: Don't assert on <colgroup> & friends

Let's just construct a placeholder BlockBox layout node for now.

Fixes #5081.

1 files changed, 2 insertions, 1 deletions

diff --git a/Userland/Libraries/LibWeb/DOM/Element.cpp b/Userland/Libraries/LibWeb/DOM/Element.cpp
index aad4b7dea5..8381a88585 100644
--- a/Userland/Libraries/LibWeb/DOM/Element.cpp
+++ b/Userland/Libraries/LibWeb/DOM/Element.cpp
@@ -152,7 +152,8 @@ RefPtr<Layout::Node> Element::create_layout_node()
     case CSS::Display::TableColumn:
     case CSS::Display::TableColumnGroup:
     case CSS::Display::TableCaption:
-        break;
+        // FIXME: This is just an incorrect placeholder until we improve table layout support.
+        return adopt(*new Layout::BlockBox(document(), this, move(style)));
     }
     ASSERT_NOT_REACHED();
 }