I'm hosting a site on Zymic (with my own domain name). I've used my own CSS/HTML coding. Everything works fine, except for the fact I cannot get my background image to display. All I get is a blank, white space around my site content.

The code for the background image is in my CSS document:

html {
background-image: url('images/backgroundAAA.png');
}

What could I be doing wrong?

p.s. this is my first website so I am a noob