diff --git a/css.html b/css.html
index 64540ad61c..c6701a66a2 100644
--- a/css.html
+++ b/css.html
@@ -2353,7 +2353,18 @@ For example, <section> should be wrapped as inline.
Hide an element to all users except screen readers with .sr-only. Necessary for following accessibility best practices. Can also be used as a mixin.
Hide an element everywhere, including screen readers, with .hidden. Can also be used as a mixin.
Hide an element to all devices except screen readers with .sr-only. Necessary for following accessibility best practices. Can also be used as a mixin.