Use '3em' instead of '40px' for 'ice' theme

webskins/ice/pub/ice.css

@@ -407,5 +407,5 @@ input.channel_index {
 .subsection table input[name="mode"] {
 	display: inline-block !important;
 	vertical-align: middle;
-	width: 40px !important;
+	width: 3em !important;
 }