CSS Sprites is a CSS technique to combine small images into one big image and then access them using the background-position property. It is used to save HTTP requests.
CSS Sprites is a CSS technique to combine small images which are used as background-images into one big image and then access them via using offset. It is used to save HTTP requests and additionally in many cases the combined image's filesize is smaller then the sum of all small image's filesize.
For example google.com is using a CSS sprite:
Read more about this technique:
There are also numerous CSS Sprite generators on the web.
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