Where did body-fixed come from?

Question

Layout

I am running the application through localhost. Everything works as it should, all styles and all code. But deciding to scroll down, I noticed that there was no slider on the right. What happened? The code doesn't say to remove it. By pressing f12, in the dom tree structure, body has the body-fixed class. Why is it there if I didn’t prescribe it and how to fix it?

Answer 1

Usually this similar class is added by libraries of pop-up windows (modal dialogs) when popping up.
If you didn’t connect anything yourself, pop-up ads are probably to blame, just a curve in itself or which (not completely) was killed by the blocker.
If your site and you didn’t connect ads either, it could crawl through from a good provider, if any external scripts are connected via http, or from a malicious extension in your browser.
/removed fortune telling ball

Answer 2

What scripts are included? Does the problem persist if you disable JS?