Be warned: It’s not for complete beginners and does expect you to have a basic grasp on HTML, CSS, and JavaScript. So you might want to take a shorter course first.

This text-based tutorial is intended for people who learn fast through a combination of reading and images — it’s possible to learn HTML and CSS foundations in 15 minutes through this tutorial.

Here are five of their CSS tutorials that you can use to quickly and easily improve your website. None of these projects take more than around 20 minutes to complete. You may like ...