Cant remove old Plugin (BUG)

i got a plugin that highlights the flashcards etc. and i thought i removed it.
but since the update its back and i cant remove it.
i deleted all plugins and there are non left but i still get those green light blub and colored arrows etc.


i cant rly creat flashcards bcs those symbols are bugged

Okay i fixed it… i remembered, that i just had to search for Custom CSS and delete the code myself…