Board Thread:Support Requests - Getting Technical/@comment-12198205-20140115064418

Is it possible to customize it through CSS? I want to customize it for the Toradora! Wiki. If you don't really understand what I'm talking about here is a picture of the subject:

http://i938.photobucket.com/albums/ad227/queennicolee/DropDownIcon_zps150cd9b5.png

Any help will be really appreciated. Thank You! :D 