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.

Nowadays it's easy to put together a web presence using social media and a personal landing page, but if you want to actually make your own web site you're going to need to learn HTML and CSS.

Instead, create different sections for your website – for example, “About me”, “Projects” and “Photos”. Use headers to create titles for each section. Then, add text to tell your story.

Ryan Boudreaux includes all the code snippets you'll need in this demo of how to create an image hover-preview effect using HTML, CSS, and JavaScript.

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 ...