This is predicated by the # of categories you have per row and the space is divided equally
If you will never have more than 2 you can try setting the #per row to 3 and see what it displays as
admin > config > maximum values > Categories To List Per Row
You might also add this to the bottom of your templates stylesheet.css file and see if is more to your liking
Code:.categoryListBoxContents img { float: left; }




