Designers! Subject yourself to "15 unimaginably torturous CSS puzzles" at CSS Hell. Today, Marcos Acosta is your tour guide ...

Your template file may have a different name, so use the correct name in place of "template.css." Your HTML head section looks similar to this example: Save the HTML file.

Perhaps you've recently learned to code and want to play around with those skills. Paste HTML is a tool that'll let you paste or type in some HTML and publish it anonymously on the web so you can ...

CSS: Enter CSS to be applied to the HTML used in your tests. It is placed between <style> elements in the header portion of the page. HTML: This area allows you to enter HTML to be used in your tests.

Discover how to build your website by learning HTML and CSS on your Mac. It's pretty easy to get started with web coding in OS X, and there are plenty of great courses to help you learn HTML and CSS.