at (12,178.666656) content-size 100x20 flex-item children: not-inline
+ BlockContainer
at (114,178.666656) content-size 100x20 flex-item children: not-inline
diff --git a/Tests/LibWeb/Layout/input/flex/stretch-alignment-with-cross-gap.html b/Tests/LibWeb/Layout/input/flex/stretch-alignment-with-cross-gap.html
new file mode 100644
index 0000000000..bb064ff4bb
--- /dev/null
+++ b/Tests/LibWeb/Layout/input/flex/stretch-alignment-with-cross-gap.html
@@ -0,0 +1,17 @@
+
\ No newline at end of file
diff --git a/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp b/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
index 999e8185b3..c18e2f781f 100644
--- a/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
+++ b/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
@@ -2022,6 +2022,9 @@ void FlexFormattingContext::handle_align_content_stretch()
for (auto& line : m_flex_lines)
sum_of_flex_line_cross_sizes += line.cross_size;
+ // CSS-FLEXBOX-2: Account for gap between flex lines.
+ sum_of_flex_line_cross_sizes += cross_gap() * (m_flex_lines.size() - 1);
+
if (sum_of_flex_line_cross_sizes >= inner_cross_size(flex_container()))
return;