How to resize a background image using CSS? code example
Example: how to change the width of a background image in css
#example1 { /* Example1 has an auto background size */
background: url(mountain.jpg);
background-repeat: no-repeat;
background-size: auto;
}
#example2 { /* Example2 has an fixed background size */
background: url(mountain.jpg);
background-repeat: no-repeat;
background-size: 300px 100px;
}