CIP #57952 improve form behavior and css

public/admin/skins/bokeh74/jquery.css

@@ -33,10 +33,12 @@ body .ui-dialog {
     z-index: 1001;
     position: fixed !important;
     box-shadow: 0 0 15px var(--widget-shadow);
+    border: 2px solid var(--nav-background);
+    border-radius: 0;
 }
 
 body .ui-tabs .ui-tabs-panel, 
-body [class*='ui-corner'] {
+body [class*='ui-corner']:not(.ui-dialog) {
     border: none;
     border-radius: 0;
 }