how to make full background css code example
Example 1: how to cover whole webpage by background image in html
background: url(images/bg.jpg) no-repeat center center fixed;
background-size: cover;
Example 2: full page background image in html
html {
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;
}