Background image span to whole screen width

by Budhram Gurung

HTML

<div id="example1"></div>

CSS

#example1 {
    height: 200px; 
    width: 100%;
    background: black url(http://www.electrictoolbox.com/images/rangitoto-3072x200.jpg) no-repeat;
    background-size: 100% 100%;
}