How to Effectively Scale CSS Sprites Using `background-size`?

Scaling CSS Sprites with background-size

CSS sprites, images composed of multiple smaller images, are a valuable technique for reducing HTTP requests. However, issues may arise when you need to scale these sprites to smaller dimensions.

For instance, let's say you have a sprite with a size of 100x100px and you wish to reduce it by half. Using the background-size property doesn't appear to do the trick.

Solution:

The key lies in understanding the original size of the sprite. Let's assume your sprite image has dimensions of 500x400. To scale it by half, you need to define the background-size to half of these dimensions:

background-size: 250px 200px;

Additionally, you may need to adjust the background-position to ensure you're accessing the desired portion of the sprite. For example, to display the upper-left portion of the sprite, you could use:

background-position: 150px 0px;

With these adjustments, you can effectively scale your CSS sprites to smaller dimensions while maintaining the desired portion of the image.

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