If you make websites, this is must-watch TV: CSS Grid Changes Everything (About Web Layouts) with Morten Rands-Hendriksen at WordCamp Europe 2017.
An educational and engaging presentation by @mor10 (epic pun on his Twitter handle!) that explains everything you need to know to move past
flex and start using CSS grid today in your web design or WordPress theme.
View links and slides on the author’s site; source: WordPress YouTube channel.