From 6de10858b92227683be6fcb41a8d3f5a6439f132 Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Fri, 11 Mar 2022 14:15:33 +0100
Subject: [PATCH] LibWeb: Only collapse vertical margin between BlockContainer
 siblings

If there's some non-block-level box (like an SVG element of some kind)
between to blocks, just skip over the non-block for purposes of margin
collapsing. This is basically a hack, and something we'll need to
improve as part of our general SVG support.
---
 Userland/Libraries/LibWeb/Layout/BlockFormattingContext.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Userland/Libraries/LibWeb/Layout/BlockFormattingContext.cpp b/Userland/Libraries/LibWeb/Layout/BlockFormattingContext.cpp
index b4597fc027..b0aa7d5a01 100644
--- a/Userland/Libraries/LibWeb/Layout/BlockFormattingContext.cpp
+++ b/Userland/Libraries/LibWeb/Layout/BlockFormattingContext.cpp
@@ -462,7 +462,7 @@ void BlockFormattingContext::place_block_level_element_in_normal_flow_vertically
             if (relevant_sibling_state.border_box_height() > 0)
                 break;
         }
-        relevant_sibling = relevant_sibling->previous_sibling();
+        relevant_sibling = relevant_sibling->previous_sibling_of_type<Layout::BlockContainer>();
     }
 
     if (relevant_sibling) {