Centralizing background image

Hi.. I am using a large image as my background. How do I centralize the image and keep it in a fixed position?

 

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

Code:

html, body {
  height: auto;
  width: auto;
  background: url(Enter your image address) center center no-repeat;;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
}

This will solve your issue.

 

Thank you. This worked perfectly.