相对定位 绝对定位 relative absolute position 图片定位a标签

 

<div class="ft_box">
    <a target="_blank" href="orderQuery.php" ></a>
</div>


.ft_box {
    position: relative;
}
#link {
    width: 100px;
    height: 50px;
    left: 140px;
    top: 0px;
    position: absolute;
    display: block;
    background: #ffffff;
    opacity: 0;
　　 z-index:2;
}