¿How to fix background image website?

Hi, friends, i want to know how to fix background in my website, a static image, something like this:
http://www.bigwhiteplanet.com/AppsOnSale

This is my website:
andesken.com

Thanks!!

 

Hello,

Paste this code in Custom CSS
Appearance > Theme Option > Styling Option > Custom CSS

Code:

html, body {
background: url(http://www.bigwhiteplanet.com/media/images/apspromo/background.jpg) no-repeat center center fixed!important;
-webkit-background-size: cover!important;
-moz-background-size: cover!important;
-o-background-size: cover!important;
background-size: cover!important;
}

It will work.

Thanks & Regards
Nitesh Raghuwanshi

 

Thanks Nitesh, it's working perfect!!