delightgrafik

I added the CSS code via the custom css field of the theme I’m using (https://optimizerwp.com), I deactivated my cache plugin, emptied the browser cache: But as soon as i enter the code in the field, the play button disappears (it’s there, you can click it, but it’s invisible.)

I checked on chrome and edge:
https://www.bernhardzimmermann.at/portfolio/jekyll-hyde/

Thanks for the fast response! Unfortunately this code made the play button to disappear. I tried some other pixel-values, I also changed the size of the play button to 20px but it doesn’t work, the play button stays invisible, although i can press it and the player starts playing.
Any other suggestions?