CSS Sprites: What They Are, Why They're Cool, and How To Use Them. By Chris Coyier On This article has been revised and re-written several times since its very first publication in 2007, to keep the information current.
The most recent revision was done by Flip Stewart in January 2015. #What are CSS Sprites? Spoiler alert: they aren't fairies that write your stylesheets for you. I wish. CSS2 - The display declaration. The display property lets you define how a certain HTML element should be displayed. display: block display: block means that the element is displayed as a block, as paragraphs and headers have always been.
A block has some whitespace above and below it and tolerates no HTML elements next to it, except when ordered otherwise (by adding a float declaration to another element, for instance). Live example: Primary CSS. CSS2 Cheat Sheet by DaveChild.