PHP API Ref: Regenerate base.css

Author: adriendupuis

docs/api/php_api/php_api_reference/css/base.css

@@ -1919,14 +1919,12 @@ ul.breadcrumbs li.breadcrumb-item-current span {
 .popover::after {
     bottom: 100%;
     left: 50%;
-    border: solid transparent;
     content: "";
     height: 0;
     width: 0;
     position: absolute;
-    border-color: transparent;
+    border: 4px solid transparent;
     border-bottom-color: #2B333C;
-    border-width: 4px;
     margin-left: -4px;
 }