If you're working on a DNN skin that requires the search button to be next to the search input you're going to be annoyed by a tiny little gap that likes to insert itself between your elements.

Fear not, though, it's a relatively simple issue to fix!

The file you need to edit is: /admin/Skins/search.ascx.

Inside that file on line 6 you'll find a sneaky little non-breaking space element. Delete that element.

non-breaking space

 

Save that file and upload it if necessary and you'll notice your search bar goes from:

Boo!

to:

Yay!
It's important to note that this skin file is a core file and there's always the possibility that the file will be replaced or completely changed during an upgrade.