diff --git a/assets/css/docs.css b/assets/css/docs.css
index 4cbe895ea4..2064df40b4 100644
--- a/assets/css/docs.css
+++ b/assets/css/docs.css
@@ -20,6 +20,7 @@ body {
   border-color: #e5e5e5;
 }
 .btn-bs:hover,
+.btn-bs:focus,
 .btn-bs:active {
   color: #fff;
   background-color: #563d7c;