CSS sprites can be termed as a method for reducing the number of image requests to a web page by combining multiple images into a single image, and display the desired segment using CSS background-image and background-position properites. Now that almost all major browsers started supporting CSS background-image and background-position properties, CSS sprites are getting more significance.

Sample HTML Code

div class="navi1">
  <ul>
    <li class="sm1"><a href="#"></a></li>
    <li class="sm2"><a href="#"></a></li>
    <li class="sm3"><a href="#"></a></li>
    <li class="sm4"><a href="#"></a></li>
    <li class="sm5"><a href="#"></a></li>
  </ul>
</div>

Sample CSS Code

.navi1 {
    display:block;
    height:72px;
    margin:0 auto;
    position:relative;
    width:525px; }
.navi1 ul {
    float:none;
    list-style-image:none;
    list-style-type:none;
    margin:3px 0; }
.navi1 ul li {
    background-image:url(tab-1.png);
    background-repeat:no-repeat;
    float:left;
    height:72px;
    margin:0px;
    padding-top:5px;
    position:absolute; }
.navi1 ul li a {
    display:block;
    height:100%;
    width:100%; }
.navi1 ul li.sm1 {
    background-position:0 0;
    left:0px;
    width:125px; }
.navi1 ul li.sm2 {
    background-position:-125px 0;
    left:100px;
    width:124px; }
.navi1 ul li.sm3 {
    background-position:-249px 0;
    left:200px;
    width:124px; }
.navi1 ul li.sm4 {
    background-position:-373px 0;
    left:300px;
    width:125px; }
.navi1 ul li.sm5 {
    background-position:-498px 0;
    left:400px;
    width:126px; }
.navi1 ul li:hover {
    z-index:1000; }
.navi1 ul li.sm1:hover {
    background-position:0 -75px; }
.navi1 ul li.sm2:hover {
    background-position:-125px -75px; }
.navi1 ul li.sm3:hover {
    background-position:-249px -75px; }
.navi1 ul li.sm4:hover {
    background-position:-373px -75px; }
.navi1 ul li.sm5:hover {
    background-position:-498px -75px; }