I have already answered to your support ticket with the same question, however I am pasting my reply here too so the other users who follow this thread can read it:
From the provided picture I presume you would like to align Kendo UI DropDownList, AutoComplete and Multiselect widgets on the same line? If this is the case you can set the following CSS to the .k-widget.k-multiselect element:
For your convenience I prepared a simple jsBin example which demonstrates the suggested approach in action.
the Telerik team
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