Since most of the Classes are repeated for each widget section, you’ll have to rename the div class that surrounds the home-feature-1 and 2. This can be found in your home.php file. Once you look in your file scroll until you see the widget section for home-feature-1 and 2, then replace that class (which will look like this – home-feature-bg-alt) with a unique class of your own. So you could call it hf-bg as an example, then go into your css file and add that as a Class…..then style it by adding the background image.
.hf-bg {
background: url(http://your-image.com);
}