How do I change forum header?

[jarn]

http://wamidnight.forumotion.co.uk/


The black bar that says 'Testing', is there any way for me to change it, without having to change the entire skin? Also, I plan on using a custom made bar in it's place.

[Mati]

Hello,

In your CSS find .main .main-head { and change the background-image:

[jarn]

I did that, but nothing happened. The header stayed the same  

[SLGray]

http://wamidnight.forumotion.co.uk/


The black bar that says 'Testing', is there any way for me to change it, without having to change the entire skin? Also, I plan on using a custom made bar in it's place.

  Please don't use bold or color. Please keep to the default text. This is reserved for the staff for moderation.

CSS:
It is the title of the forum -

Code:

#pun-title h1 {
     background-image: url ("IMAGE'S URL");
}