WordPress uses a combination of PHP, HTML and CSS to render the appearance of a blog. If the CSS contains invalid code, the blog will fail to display as intended, as the Web browser won't understand ...

One of the best ways to learn to build compelling business websites is to study the code that others create. While HTML is great for placing objects on a page, Cascading Style Sheets add sparkle, ...

Dabblet, created by Lea Verou, is an “interactive playground” for trying out snippets of CSS and HTML code. It uses -prefix-free, so that you won’t have to add any prefixes in your CSS code, and you ...

jsFiddle lets developers play with the three core elements of Web development. Check out this powerful application for rapid prototyping and testing. Every developer has been in the situation where ...