I'm not sure if this is something you wanted BUT I figured out why your header links didn't have the underline (inside the .topnav a {} css there's a line that says text-decoration:none;) I thought I'd share in case you hadn't seen it yet :))

I finally added a favicon I feel so accomplished

This site looks super cool and I can't wait to check it out!!! :)) (it's midnight for me so I must sleep but I'm going to look through it thoroughly in the morning)