diff --git a/docs/assets/css/bootstrap.css b/docs/assets/css/bootstrap.css
index 2535de55e4..15f56dcb0c 100644
--- a/docs/assets/css/bootstrap.css
+++ b/docs/assets/css/bootstrap.css
@@ -2881,7 +2881,6 @@ table .span24 {
   position: relative;
   height: 0;
   overflow: hidden;
-  overflow: visible \9;
   -webkit-transition: height 0.35s ease;
      -moz-transition: height 0.35s ease;
        -o-transition: height 0.35s ease;