Tailwind CSS - A utility-first CSS framework for rapidly building custom user interfaces.
Wicked Backgrounds - Create beautiful background waves
Animista - Create beautiful CSS animations in your browser
100+ Mesh Gradients - Well Crafted 100+ Gradient packs that can be used for Web 3.0 projects, Backgrounds, and for wallpapers.
Instagram.css - Complete set of Instagram filters in pure CSS
Gradicol - Handpicked collection of linear gradients.