dev #64069 fix css compatibility chrome / firefox

public/opac/js/widget_templates/widget_templates.css

-.widget_templates .ui-accordion-content {
-    column-count: 3;
-}
-
-
 .widget_templates.ui-accordion .ui-accordion-header {
     padding: 1em 2em;
     margin-bottom: 2px;
@@ -28,11 +23,15 @@
     box-shadow: 0px 0px 5px var(--widget-shadow);
     text-align: center;
     border-radius: 5px;
-    margin: 10px 0;
+    margin: 0.5%;
+}
+
+
+.widget_templates a {
+    width: 32%;    
 }
 
 
-.widget_templates a,
 .widget_templates a img {
     width: 100%;
 }
@@ -43,6 +42,7 @@
     margin: 0;
     padding: 1em;
     border-radius: 5px 5px 0 0;
+    white-space: nowrap;
 }
 
 .widget_templates a:hover {