Board Thread:Support Requests - Getting Technical/@comment-32704847-20201003223614/@comment-32704847-20201004044308

The line I posted uses the  selector, which is not supported in any browser as a CSS rule. For example, you cannot hide divs containing elements with class="deleted" by using:

div:has(.deleted) { display:none }

But you can hide those divs through the extesion I told, because it uses javascript to identify those divs and add an attibute on them when the page is loaded, and that attribute is set with. And all you have to do is to add the line with the wanted selector to your personal filter list.

The article I linked says it was not implemented on browser because of performance issues. But I have dozens and dozens of lines in my list using the following selectors: And I don't feel it slowing down my browsing at all.
 * (for htlm tags, ids and classes)
 * (for text inside containers)
 * (for parent containers)