How do I learn to code in HTML and CSS on my Mac? Web design is one of the most useful skills you can learn, and it’s easy to learn HTML and CSS (the two main pillars of web pages) in Mac OS X.

Use this handy, simplified guide to quickly learn HTML and CSS -- a foundation of modern web development.

When you do, you can do some refactoring to shape your CSS to better suit a component-based model. Over time, you’ll improve your CSS and make the components on your site more consistent.

How does CSS work? CSS is a language that is used to style HTML documents. This language can be used to create both simple and complex websites.

Use a CSS Pre-processor The regular CSS applies the CSS from the different CSS files and folder. This makes the whole process very slow as the website has to load each and every CSS file.