<div class="navimgLeft clearfix">
    <div class="navimgLeftone">
        <div class="navimgLeftonebox">
            <img src="images/leftone.jpg">
            <img src="images/leftone.jpg">
            <img src="images/leftone.jpg">
            <img src="images/leftone.jpg">
            <img src="images/leftone.jpg">
        </div>
                             
        <div class="button1">
            <a></a>
            <a></a>
            <a></a>
            <a></a>
            <a></a>
        </div>
        </div>
</div>
                 
.navimgLeft{
    height:480px;
    width:520px;
     
    float:left;
}
/* 左上图片 */
.navimgLeft .navimgLeftone{
    height:280px;
    width:520px;
    overflow:hidden;
    display:relative;
}
 
.navimgLeftone .button1{
    position:absolute;
    height:5px;
    width:100%;
    left:50%;
    bottom:20px;
      
}
.button1 a{
    display:inline-block;
    height:5px;
    width:20px;
    background:#000;
}