Few days back, I wanted to use Twitter icon from one of my other websites but I was not able to save it from the web page. Then I looked into the page source and found that its using CSS Sprites to display all the social bookmarking images from a single large image. So my WordPress theme is using CSS Sprites for faster page loading and I was totally unaware of that. Then I decided to learn it and how to use it in a webpage.
I was amazed to find out that there are so many online tools to create CSS Sprite image and provides CSS Code to use them. Some of them even went a further step to provide a sample HTML page to make the learning more comfortable.