Dear Ruben @rubenraven
If you wish to just make all text on your site change red ( or any other colour ) when you hover just add this code:
span:hover { color:red !important; } a:hover { color:red !important; }Into the Custom CSS area of "Lay Options - Custom CSS & HTML"
Screen Shot 2020-09-14 at 2.51.54 PM.png
Remove the 'a:hover' section if you don't wish you links to be red.
Hope this helps Ruben, have a wonderful day :)
Best
Richard