fit 728 × 1294 image to fit background for website code example

Example 1: how to scale a bg image acc to size of div

/* One way */
background-size: cover;

/* Other option */
background-size: contain;

Example 2: how to set background automatically with my screen height

html { 
  background: url(image.jpg) no-repeat center center fixed; 
  -webkit-background-size: cover;
     -moz-background-size: cover;
       -o-background-size: cover;
          background-size: cover;
}