- I like Kata, which helps you to learn things faster and sometimes find a new way to do things awesome. Want to learn ES6, try this ES6 Katas.
- Working shapes with CSS. It takes me few seconds to understand the example using border to draw a triangle. The clip-path example also surprises me!!
- Checkbox trickery with CSS. Interesting example to build custom look-and-feel checkboxes.
- If you use JsHint or JsLint before, I think you can give a try for Scss-Lint as well.