定位问题

1、商品框：

html

<div class="box">
    ![](5-1.jpg)
    <h3>Smartisan&nbsp;坚果自拍杆</h3>
    <span>通用3.5mm接口、航空铝合金伸缩杆</span>
    <p>$69.00</p>
    <div class="fox">
        <button>购物车</button>
        <button>购物车</button>
    </div>
    <a href="#"></a>
</div>

css

        .box{
            width: 300px;
            height: 500px;
            border: 1px solid #cccccc;
            box-sizing: border-box;
           text-align: center;
            position: relative;
        }
        .fox{
            position: absolute;
            left: 50%;
            transform: translateX(-50%);    [ 位移]
            bottom: 119px;
            display: none;     [不显示]
            background-color: white;
        }
        .box:hover .fox{
            display: block;
        }
        .box:hover>a{
            position: absolute;
            top: 0;
            left: 0;
            box-shadow: 0 0 12px 3px #cccccc inset;  [盒子阴影]
            width: 100%;
            height: 100%;
        }