another new premade layout + 2 small updates

i finished up that gradient-centric 2000s-style layout! check it out; i think it's very fun. i'm especially proud of the inset marquee, it's a fun little bit of styling in my humble opinion. i went to the extra effort of editing some icons just for this, which i'm sure absolutely no one cares about besides me haha. there's hardly ever any good reason to use an inset box-shadow, but there's two in…