What is the "08" CSS Sprite and what are the pros and cons

"08"what is a CSS sprite? What are the pros and cons?

Concept: Stitching multiple small images into one image. The background pattern that needs to be displayed is adjusted by background-position and element dimensions.

Advantages:

1. Reduce the number of HTTP requests, greatly improving page loading speed.
2. Increase the repetition of picture information, improve the compression ratio, reduce the size of the picture.
3. It's easy to change style, just change the color or style on one or several pictures.

Disadvantages:

1. Picture Merge trouble.
2. Maintenance hassle, modifying a picture may require a new layout of the entire picture, style.

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What is the "08" CSS Sprite and what are the pros and cons