If you’re familiar with image editing software, such as Photoshop, you’re probably familiar with masks as well. Masks help you bring two layers together and create a unique outcome.
With Divi, you can get creative and create your own kind of masks inside your pages using gradient backgrounds in combination with background images.

In this tutorial, we’ll show you step by step how to create 8 different background masks for any kind of design you’re working on. This tutorial will help you make quick design tweaks to your pages without having to touch any image editing software at all.

Read more: https://www.elegantthemes.com/blog/divi-resources/how-to-use-gradient-backgrounds-as-background-image-masks-with-divi