Lea Verou shows an excellent (as always) tip for dealing with CSS animations. This article is a must read (just as all other Lea’s articles).
Rachel Nabors shows step-by-step how to create a CSS driven walk-cycle animation. Very interesting, very informative and very educational tutorial.
Are you regularly updating your CSS? You know, removing redundant prefixes, updating to newer syntax (if you’re using cutting-edge features) and similar? Well… you should.
Inuit.css is a no-bullshit grid system built by Harry Roberts (you do know who he is, don’t you?) which certainly has its place in a massive grid systems market. In this article Harry explains how grids work in inuit.css.
Catalin Rosu shares a simple trick to fix a problem with improper rendering of borders in Firefox. Very useful.
A media query that will certainly be very useful (as soon as browsers start implementing it).