04. Image Sprites

The collection of images placed in a single image is known as an image sprite.

The idea is to have this single image changes position as the user's mouse change state. The user's act of moving over is called rollover.

So why use a single image sprite rather than three separate images. Simply put, it saves the user bandwidth and reduces the number of server requests.

Here is the breakdown of how it works:
  1. Set the background image for the link/button, but set the background-size to have just enough space to show just one of the images.
  2. When the user hovers over the image, position the image up so that the other active state image is shown.
  3. Now there just enough space for that new button, so the other buttons are hidden.
  4. The effect we get is that the link changes image as the user changes his or her mouse state.

Build modern and responsive webpages

HTML & CSS

Build modern and responsive webpages Try Front-end

This book teaches HTML as if it's for anyone - hobbyists, students, and professionals - and it's full-color throughout. It utilizes information graphics and lifestyle photography to explain the topics in a simple way that is engaging. You can progress through the chapters from beginning to end or just dip into topics of particular interest at your leisure.

$ Check price
29.9929.99Amazon 4.5 logo(926+ reviews)

More Front-end resources

Aching back from coding all day?

Acupressure Mat & Pillow

Aching back from coding all day? Try Back Problems

Relieve your stress, back, neck and sciatic pain through 1,782 acupuncture points for immediate neck pain relief. Made for lower, upper and mid chronic back pain treatment, and improves circulation, sleep, digestion and quality of life.

$$ Check price
144.87144.87Amazon 4.5 logo(1,890+ reviews)

More Back Problems resources

Ad