diff --git a/themes/vanilla/assets/scss/toc.scss b/themes/vanilla/assets/scss/toc.scss
index c540ce5..091a609 100644
--- a/themes/vanilla/assets/scss/toc.scss
+++ b/themes/vanilla/assets/scss/toc.scss
@@ -9,7 +9,7 @@ $toc-border-color: $code-border-color;
     @include margin-content-left;
     display: flex;
     flex-direction: column;
-    align-items: end;
+    align-items: flex-end;
     margin-bottom: 1rem;
 
     em {