Rachel Andrew looks at how to use CSS Generated Content to achieve styling of empty cells without adding redundant empty elements and shows some use cases where this technique makes sense.
A nice article with some good advice on writing effective CSS.
Articles & Tutorials
Per Harald Borgen created 8 interactive screencasts that will take your CSS Variables knowledge from beginner to advanced.
Thierry Blancpain goes over the different types of font formats and dives into advanced concepts and considerations when using web fonts.
Zell Liew shows a method to create CSS Grid subgrids.
Amelia Bellamy-Royds gives a nice overview of how to use (and how not to use) Flexbox order property and why.
Andrew Spencer gives some advice on creating more visually accessible websites.
Collaborate on design socially with resolvable image discussions within the same repositories you collaborate on code.
A tool that scans your website for unused CSS selectors. It follows internal links on your website recursively and looks on multiple pages.
Docusaurus is a project for easily building, deploying, and maintaining open source project websites.
Luis Manuel created a beautiful, experimental slideshow that animates in fragments.