diff --git a/docs/css/main.css b/docs/css/main.css
index 309ad7b3bd..6710b6e856 100755
--- a/docs/css/main.css
+++ b/docs/css/main.css
@@ -326,7 +326,7 @@ a.anchorjs-link:hover { text-decoration: none; }
   border-left-width: 0px;
   border-bottom-width: 0px;
   margin-top: 0px;
-  width: 210px;
+  width: 220px;
   height: 80%;
   float: left;
   position: fixed;