always show error message with input-groups

less/qfq-bs.css.less

@@ -271,7 +271,7 @@ i.@{spinner_class} {
   color: #fff;
 }
 
-input:focus ~ .with-errors.help-block:not(.hidden), textarea:focus ~ .with-errors.help-block:not(.hidden) {
+.input-group ~ .with-errors.help-block:not(.hidden), input:focus ~ .with-errors.help-block:not(.hidden), textarea:focus ~ .with-errors.help-block:not(.hidden) {
   display: inline-block;
   /* visibility: visible;
   max-height: 150px;