i'm new and not great at this

hi myspace gang! i'm new to css so if you see any errors, please feel free to reach out and lmk! right now i'm noticing my mp3 doesn't play automatically, idk how to fix that lol. if there's anything else i'm overlooking, pls hmu. also, thx for the compliments on my page and my new friends! :)
https://64.media.tumblr.com/ffab1cbed84d3b3cd3039e1a28890e13/0c8f4c0747cd54e4-6d/s2048x3072_c0,575,100000,98276/987d7fa59e3c5fe1f76eedb857424b9cb69f3e2c.gif