Because Scroll-Driven Animations are only active when there is scrollable overflow, it is possible to use them as a mechanism to detect if an element can scroll or not.

With a greater proliferation of devices than ever before, we developers can no longer rely on viewport size as the factor that determines the styles we serve up to our website users.

Today we’ll experiment some more with the adjacent and general sibling combinator and the :checked pseudo-class. Using hidden inputs and labels, we will create an accordion that will animate the content areas on opening and closing.

Comic-book style text effects with SVG

Making shapes with clipping paths in CSS

Fix positioning for fixed elements in iOS and others where the keyboard is active

Escaping special characters in CSS

Some lesser known CSS features

Valid points, but LESS also provides extend features

Flexbox navigation example

Pretty nice looking font icons, might be worth a try?

Seems like an interesting concept