How to Add an Image to a CSS File. Web pages normally add images using the inline HTML "img" tag. CSS coding usually doesn't set an image's source because CSS controls design rather than content.

If “Background Image” is turned on, the slider will be moved to the right, the slider background will turn green, and you’ll see a collection of background previews below the slider.

How to Change a Background Dynamically in a Website. Using CSS and JavaScript, you can dynamically change the background on your website.