1 files changed, 6 insertions, 6 deletions
diff --git a/docs/assets/css/bootstrap.css b/docs/assets/css/bootstrap.css
index 11b081093..49e63bd31 100644
--- a/docs/assets/css/bootstrap.css
+++ b/docs/assets/css/bootstrap.css
@@ -1588,16 +1588,16 @@ input[type="checkbox"][readonly] {
   border-color: #3a87ad;
 }
 
-input:focus:required:invalid,
-textarea:focus:required:invalid,
-select:focus:required:invalid {
+input:focus:invalid,
+textarea:focus:invalid,
+select:focus:invalid {
   color: #b94a48;
   border-color: #ee5f5b;
 }
 
-input:focus:required:invalid:focus,
-textarea:focus:required:invalid:focus,
-select:focus:required:invalid:focus {
+input:focus:invalid:focus,
+textarea:focus:invalid:focus,
+select:focus:invalid:focus {
   border-color: #e9322d;
   -webkit-box-shadow: 0 0 6px #f8b9b7;
      -moz-box-shadow: 0 0 6px #f8b9b7;