Fix base css

Author: charles7668

web_src/css/base.css

@@ -1355,6 +1355,7 @@ table th[data-sortt-desc] .svg {
 
 .btn,
 .ui.ui.button,
+.ui.ui.dropdown,
 .flex-text-inline {
   display: inline-flex;
   align-items: center;