Whoa, man. CSS has changed so much since highschool. You can animate stuff now?!
I found out that you can animate using flex-grow and saw a cool example on w3schools so I thought I'd be really lazy and animate my sea snek. It came out... kind of shitty.
Apparently animatable elements are super new (IE 10 and above? Dude!), so you best be using chrome to get the full shitty experience.