How to set background image for row
The layout is composed of 3 elements the Section, Row and Column:
NOTE about image sizes:
If your image looks grainy or blurry, you'll want to make sure you selected the full size version of the image. The default behavior of WordPress when you upload files will be to offer the file in various file sizes depending on settings in your WordPress Theme, or WordPress default behavior.
If you previously selected a smaller size for an image somewhere else on your site, and you then add an image with OptimizePress, WordPress will remember your setting and automatically select the smaller size option. You'll then want to make sure you change this to the proper size, or full size image depending on what you need for where you are adding the image.
We use the default media library options built into WordPress in order to ensure ongoing compatibility and ease of use, so these options are not coming directly from OptimizePress which is why it works this way.
You may select the image size you want after you select the image you want to add, as you can see in the following screenshot: