you might not need js for that

Making interactive components, only with css

Resources

Flexbox

What the flexbox?!, by Wes Bos
Flex Cheat Sheet, by CSS-tricks

The inspiration for this workshop

Radio Controlled Web, by A List Apart

misc

Because knowledge don't take space.

About BEM syntax & CSS architecture with Harry Roberts:

Mind BEMing
Css Guidelines
CSSWIZARDRY because it's like a bible for CSS, without the bullshit.