Evolution of <img>: Gif without the GIF
Colin Bendell explains how Safari Technology Preview is paving the way for awesome gif-like experiences, without the terrible performance and quality costs associated with GIF files.
Issue #293
Understanding CSS Layout And The Block Formatting Context
Rachel Andrew explains what a Block Formatting Context is, why it works, and how can it help you understand how layout works in CSS.
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Learn Advanced CSS Animation Strategies and Techniques
Watch this free 4-part video course that teaches you how to build an animated clock in pure CSS.
Inspiration
Spinning Circles Animation
Paul Grant created a beautiful animation using pure CSS (and some clever element positioning).