Teaching designers about flexible box layout for nearly a decade, Flexbox Froggy is probably the most well-known CSS game. For good reason, too. Not only is flexbox one of the trickier CSS concepts to ...

HTML and CSS use a box model, which means that page elements include margins, padding, background colors and, optionally, decorative borders. Open your HTML Web page in a text editor such as Notepad.

The CSS 3 box-shadow property allows for drop shadows and other gradient-based effects without the need for images or other hacks. Box shadow works in Firefox 3+, Chrome, Safari, Opera and ...