Images not showing up with Carrington Business Theme

Hi,

I’m using the Carrington business theme for my website – 2beunstoppable.net

I’m having trouble adding images for the background that i want. I’ve tried to use adding the image via: the hero (super image), Image and HTML code. (Then added the url of the image) No luck.

I’m looking to add an image to the background in the body of the website…

does anyone have experience or can give me a tip on how to do this?