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 animated GIFs sparingly, and try to keep them as small as possible to help your Web pages load faster. You can also add a background-position attribute to your CSS, with values such as center ...

Not only you can enjoy the set of interesting screensavers here but also create your own personalized one. However, for that, you need to know HTML/CSS, javascript, or canvas.