How to show full height background image?

Question

I have a photo type (not landscape) background image with 979px width by 1200px height. I would like to set it to float left and show 100% full image height fixed, without t

Answer 1

 html, body {
    height:100%;
}

body { 
    background: url(images/bg.jpg) no-repeat center center fixed; 
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}