Among other things, CSS3 now offers the ability to create animations triggered by a mouse over or click. Hüneburg used those features to code a replica of the Mac OS X dock.

9 Places You Can Learn How to Code ... Basic HTML and CSS are key if you want to optimize and test your landing pages. And trust me--you definitely want to be doing those things!

W3Schools offers coding tutorials and reference guides on HTML and CSS. It’s free, but those who pay $95 can earn an HTML or CSS certificate after passing an online exam.

Nearly seven years into my career, I decided to take a coding class – learning Ruby, HTML and CSS. I was intrigued by the language that powers our everyday lives, so ubiquitous and yet so unknown.