The Largest Library of Open-Source UI. Community-built library of UI elements. Copy as HTML/CSS, Tailwind, React and Figma.

Here's what I'd like you to know upfront: this is a hard problem. If you've landed here because you're hoping to be pointed at a tool you can run that tells you exactly what CSS you can delete from your project, well... there are tools out there, but I'm warning you to be very careful with them because none of them can ever tell you the complete story. Post written by Chris Coyer.

A tiny JavaScript library to easily toggle the state of any HTML element and its targets. Dropdown, navigation button, tooltip, collapsible panel, lightbox, tabs, switch like above… UI components made in minutes without worried about JavaScript. Only set a few HTML attributes, and code the rest with your CSS skills.