Sunnyside Agency

A bit of help if anyone is able to offer insight: a couple of small things I couldn't figure out:

The color change on hover on the 'Learn More' links. I used ::after for the highlight design (.card-1 a::after), but when combined with hover (.card-1 a::after:hover) , it didn't work? Could not find a solve for this. How can I create the specific shape for the nav pop-up on mobile? The pointy corner on the top right to be specific. I settled for just a rectangle. Overall a fun project although a bit more code than I had anticipated :)