OK, I thought I already focused on the code itself. It not necessary to search the whole website.
But I’ll make it shorter.
I would like to hide the WP button in every embed link on a post.
The code is below, and when I add display: none, the icon is gone.
But when I add this code to my CSS, it doesn’t work, and the icon still shows. Even when I use !important
So I hope this makes it more clear what my question is?