diff --git a/src/layouts/Layout.astro b/src/layouts/Layout.astro
index 1fb8b6251f..1b9db9e128 100644
--- a/src/layouts/Layout.astro
+++ b/src/layouts/Layout.astro
@@ -209,6 +209,7 @@ const resolvedBreadcrumb =
     #content {
       /* so that the content does not overflow the viewport */
       min-width: 0;
+      flex-grow: 1;
     }
   }
   @media screen and (max-width: calc(768px + $toc-width + $article-gap)) {