Adele - Design Systems and Pattern Libraries Repository

Super-Powered Grid Components with CSS Custom Properties | CSS-Tricks

CSS Custom Properties and Theming | CSS-Tricks

:empty and :blank | Zell Liew

[toread] Der Design/Development-Workflow und die »Single Source of Truth« | kulturbanause® blog

The subtle art that differentiates good designers from great designers

Native lazy-loading for the web  |  web.dev

ImageOptim plugin for Sketch app

Things I Wish I’d Known About CSS | CSS For Designers

Sketch - macOS UI Library

imgix Page Weight Tool • Learn how to improve your site or app’s speed.

Micromodal.js - Tiny javascript library for creating accessible modal dialogs