If you’d like to create images for a hero section of a website and put those images in a directory and have them appear as random background images that change each time a person visits a page, this is how you do it with WordPress. The more images you have, the more random it is.
If this saved you time, and I’m sure it did, consider a donation via PayPal to firstname.lastname@example.org.
This gist has two sets of code. The first is the CSS is which is an example only. The next file is the random image php from a directory for Genesis (modifiable for any WordPress theme). Adjust as needed for your requirements.
All the best,
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