BrandArt

Two of the web development techniques that together account for many of the improvements to the appearance of our favorite sites on the web over the last five years are Image replacement and CSS sprites. Behind the scenes, both of them creatively use existing code like <span> tags and CSS in new ways. Image replacement lets websites display type in fonts that may not be available on your computer, while CSS sprites create more efficient and attractive roll-over effects.An article in CSS Tricks discusses image replacement and one by David Shea explains how CSS sprites work.