Adsense Fixed Position … It’s a No, No!
Can you put Google ads in a <div> with “position: fixed”? Giving your Adsense fixed position would be nice, but, sadly, it’s against the rules.
I was recently asking that question and found the answer rather hard to find. So, when I finally did find an official answer on the subject, I thought that I would pass it along.
So, what’s the answer? The answer is: no. No, you can’t do anything to manipulate the aesthetics of an ad to call attention to it more than any other aspect of the page.
So, even though the tactic of position:fixed is common (Facebook, Gmail, etc), you cannot use this tactic yourself as it relates to your ad.