You dont have option by the admin to change the layout.

"Multi Column" - Create custom block template and edit the css and/or markup of the view.PHP

In bootstrap:
By grid:
http://jsfiddle.net/kY5LL/18/
http://jsfiddle.net/m3u8bjv0/2/...

By form inline class:
http://www.w3schools.com/bootstrap/tryit.asp?filename=trybs_form_in...

The output of view.php is simple (the controller not :) ):
some Wrapper
-----For each (some loop)
---------- print some Div (by default div is block element = 100% width of its parent container)
---- end loop
----- button