XF 1.5 Need help with Header/Banner Redirect Link

I'm trying to optimize the header banner on our Forums so that when clicked it redirects to the Forum homepage but can't figure out how. Please help me. :D

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I have a problem with the Logo
It's showing up as a CSS background image, but I don't know where the attributes for it are, therefore, I cannot link it to my homepage or anything
[or I cannot edit it and whatnot bc whoever set it up put the code somewhere for it and I don't know where it is
 
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