The Page Body Element is the background of your entire page. As a default you page background is white, but you can change the background color or add a background image.
To open the Body Settings, double-click on the body or right-click, to show the settings option.
You can also find the body settings icon at the upper left corner of the page, this can be clearly seen when you add a background color or background image.
If you have other elements on the page and you're having a hard time selecting the body element settings from the upper left corner, just click body from the lower left corner of your screen to select the body element. Then double-click or right-click any portion of the page where there is no element on top of the body yet to show the settings option.
