Dark Reader - Reduce eye strain in your browser with this extension that provides a dark theme for browsing.
Sass - Syntatically Awesome Style Sheets
Night Eye - Night Eye is a browser extension that enables dark mode on any website you visit. It does not ruin your browsing experience by simply inverting images.
PostCSS - Increase code readability. Add vendor prefixes to CSS rules using values from Can I Use. Autoprefixer will use the data based on current browser popularity and property support to apply prefixes for you.
Dark Mode - A global dark theme for the web
Stylus - EXPRESSIVE, DYNAMIC, ROBUST CSS