box-shadow can safely be used without vendor prefixes

settings/css/settings.css

@@ -38,7 +38,7 @@ div.quota { float:right; display:block; position:absolute; right:25em; top:0; }
 div.quota-select-wrapper { position: relative; }
 select.quota { position:absolute; left:0; top:0; width:10em; }
 select.quota-user { position:relative; left:0; top:0; width:10em; }
-input.quota-other { display:none; position:absolute; left:0.1em; top:0.1em; width:7em; border:none; -webkit-box-shadow: none; -moz-box-shadow:none ; box-shadow:none; }
+input.quota-other { display:none; position:absolute; left:0.1em; top:0.1em; width:7em; border:none; box-shadow:none; }
 div.quota>span { position:absolute; right:0em; white-space:nowrap; top: 0.7em }
 select.quota.active { background: #fff; }