







A design system for building faithful recreations of old UIs.

tailwindcss - npmx
A utility-first CSS framework for rapidly building custom user interfaces.

Modern CSS snippets. Every old hack, replaced.
Side-by-side comparisons of outdated CSS techniques and their modern native replacements. Grid, custom properties, nesting, container queries, and more.

Modern CSS snippets. Every old hack, replaced.
Side-by-side comparisons of outdated CSS techniques and their modern native replacements. Grid, custom properties, nesting, container queries, and more.

Components.build
An open standard for building modern, composable and accessible UI components.

Open Props UI | A modern CSS UI library
CSS UI library leveraging the most modern features. Components you can copy and paste into your project.


Building a UI framework
Building a UI Framework Ian Hickson (ian@hixie.ch) — 2025 — First Edition — https://software.hixie.ch/ui-frameworksTo leave comments, use the edit version. Introduction This document examines important design decisions for creating a new graphical UI framework. It was commissioned to answer the...
The CSS Selection - 2026 Edition - Project Wallace
The CSS Selection shows real-world CSS usage from over 100,000 websites and looks at the most important metrics.

Atomic Design by Brad Frost
Learn how to create and maintain digital design systems, allowing your team to roll out higher quality, more consistent UIs faster than ever before.

css.graphics/pipes
Endless 3D pipes inspired by the classic screensaver, rendered entirely with HTML and CSS using PolyCSS.

Shoelace: A forward-thinking library of web components.
Hand-crafted custom elements for any occasion.
