is css-sprite good technique? I read about its pros at http://spriteme.org/ and have also I seen a lot of questions about css sprites here in stackoverflow.
What are its cons?
Will it work in all browsers as claimed in their site?
Its a great technique, but you have to be real carefull as how you do it so it works correctly in every browser.
It can be done and is a good optimizing tip, but as always, pay attention as how it works in IE, Firefox and Chrome while you are doing it.
The cons are that it can't be used always, and you have to stick to the least common denominator for cross browser css support.
Of course, because it saves lot of http request, that very important for your website loading time.
Check out this page:
http://www.tutorialrepublic.com/css-tutorial/css-sprites.php
It has a great explanation and everything you need to know about CSS Sprite.