Hi William,

To add background for a specific page, please follow the instruction below:

1. Open the menu item that you want to add background for, open tab "Page Display" then add a Page class for the menu item. In the example, we added class "typo".
Check attached image to see how to add a class for a menu item.
2. Open your custom.css file (templates/t3_bs3_blank/css) then add the style below:

Example:

.typo body {

background: #000;

}

You can change the color or you can use an image to be displayed as background for the menu item.

Regards.