/* 双列布局 s*/
.doubleCow {
    display: flex;
}

.doubleCow .left {
    width: 304px;
    /* height: 490px; */
    position: relative;
    padding-bottom: 320px;
}

.fixed-box {
    width: 304px;
    height: 490px;
    border: 1px solid #eee;
    padding-bottom: 320px;
}

.doubleCow .isTop .fixed-box {
    position: fixed;
    top: 64px;
    background-color: #fff;
}

.doubleCow .isbottom .fixed-box {
    position: absolute;
    top: auto;
    bottom: 0;
    background-color: #fff;
}

.lf-item {
    padding: 18px 30px;
    font-weight: 500;
    font-size: 18px;
    color: #333333;
    border-bottom: 1px solid #eee;
}

.lf-item-active {
    border-right: 4px solid #1890ff;
}

/* 产品咨询 s */
.lf-bt {
    width: 304px;
    height: 297px;
    border-top: 1px solid #eee;
    position: absolute;
    bottom: 0;
    background: url(https://dengkeyun.oss-cn-shenzhen.aliyuncs.com/FrontResources/dengkeyun_website/consultation/bg.png)
        0 0 no-repeat;
    background-size: 100% 100%;
}

.lf-bt .qrcode {
    display: block;
    width: 114px;
    height: 114px;
    background-size: 100%;
    margin: 32px auto 13px;
}

.lf-bt .des {
    width: 144px;
    font-weight: 500;
    font-size: 16px;
    color: #333333;
    text-align: center;
    margin: 0 auto 27px;
}

.lf-bt .product-bt {
    width: 240px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: 400;
    font-size: 12px;
    color: #666666;
}

.lf-bt .product-bt img {
    display: block;
    margin: 0 auto 6px;
}

/* 产品资讯 e */

.right {
    /* 右侧滚动需给固定高度 */
    /* height:  500px;
  overflow-y: scroll; */
    flex: 1;
    margin-left: 40px;
    font-weight: 400;
    font-size: 16px;
    color: #333333;
}

/* 双列布局 e */