If you try this example, where I added style on multiselect to display it width as 30%, default margin stays and I cant remove it.
http://dojo.telerik.com/UcABo
Inspect multiselect widget and hover class .k-widget.k-multiselect.k-header and you will see that margin (also you can see it on attachment below). This doesn't show in dropdown list. My question is, how to remove that margin?