Board Thread:Support Requests - Designing Your Wiki/@comment-30492097-20190328053408/@comment-9605025-20190328215504

So, if I am understanding correctly, you want to:
 * 1) Blur the portion of the page background covered by the main content area
 * 2) Make the background of the main content area transparent so you can see the blurred page background

I am not sure this is possible as I don't think CSS provides a way to blur only part of an image. - Edit:

Here is a solution I found online. However, I am not sure if this is possible since you are much more restricted in what you can do on a Wikia wiki. I suppose you could use custom JS; but I am not sure whether or not that would violate the customization policy. If you really want to do this, you should probably check staff just to be safe.