Quite some time ago I've put on CSS custom pet profile overlay. Since then I've totally forgotten how I did it and can't find where I can remove it. PLZ Halp!

This is part of the pet's description. There are a couple of ways to access that.

On the pet page, click on the tiny arrow in the upper righthand corner of each pet's space and select the "Edit Description" option. (Ignore the red underline in this picture.)

From any page in the menu at the top of the page, hover over "Personal" until the drop down appears, then hover over "Pets" until the drop side? appears. Then scroll to the pet that you want and click "Pet" and then on the next page select "Edit Description".

Or use this link after completing it with your pet's ID number:

https://subeta.net/pet.php?act=desc&petid=

Sorry for the late reply and thank you for your help!