Cool that you open-source a book - it looks like it contains a solid amount of information. Well done! What I'm missing (couldn't find it on the first glance)

Cool that you open-source a book - it looks like it contains a solid amount of information. Well done! What I'm missing (couldn't find it on the first glance) is a topic about the performance implications of animations. Most devs don't consider which css properties trigger a layout->paint->composite re-render, which has massive influence on browser performance. There are soooo many shitty animations/transitions in the web, just because people don't know that animations can slow down a whole site. Imho people should read something like the web dev one pager on animation performance (1), which explains (more or less) how to build high-performance animations. There is also this free udacity course (2) which explains everything a web developer needs to know. It's not hard nor magic, and you just have to hear it once to remember it for whenever it becomes necessary. 1: https://developers.google.com/web/fundamentals/design-and-ux/animations/animations-and-performance https://developers.google.com/web/fundamentals/design-and-ux... 2: https://eu.udacity.com/course/browser-rendering-optimization--ud860 https://eu.udacity.com/course/browser-rendering-optimization...