jquery突出显示案例

HTML

CSS

*{
    padding: 0;
    margin: 0;
}
.clearfix:before,.clearfix:after{
    display: table;
    content: '';
}
.clearfix:after{
    clear:both;
}
.clearfix:before{
    *zoom: 1;
}
ul{
    list-style: none;
}
.menu{
    width: 618px;
    overflow: hidden;
    margin: 100px  auto;
    border: 5px solid palegoldenrod;
}

.menu li img{
    float: left;
    margin: 3px;
    display: block;
    box-sizing: border-box;
}

jquery