Background re-sizing

I’m going to drive y’all nuts with my background.

This is what I’m using because my background isn’t ‘fitting’ the screen. It’s not working.

Untitled.png {
min-height: 100%;
min-width: 1024px;
width: 100%;
height: auto;
position: fixed;
top: 0;
left: 0;
}
I also played the google card and ended up trying this:
#Untitled {
position: fixed;
top: -50%;
left: -50%;
width: 200%;
height: 200%;
}
#Untitled.png {
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
margin: auto;
min-width: 50%;
min-height: 50%;
}
url: http://www.cayceberryman.com.