.header{position:fixed;top:0;left:0;right:0;max-width:804px;margin:auto;height:min(7.5rem,75px);display:flex;align-items:center;justify-content:space-between;padding:0 min(2rem,20px);background-color:#fff;border-bottom:1px solid #e1e1e1;z-index:100}.header .icon-caidan,.header .icon-yonghu{font-size:min(2.9rem,29px);margin-right:min(4rem,40px)}.header .item-cart{text-decoration:none}.header .icon-sousuo,.header .icon-gouwudai{font-size:min(3.1rem,31px)}.header .item-logo{flex-shrink:0;flex-grow:1;display:flex;align-items:center;justify-content:center}.header .item-logo .logo{height:min(5.3rem,53px)}.header .item-cart .item-product-num{display:flex;align-items:center;justify-content:center;position:absolute;top:min(-.8rem,-8px);right:min(-.4rem,-4px);width:min(1.8rem,18px);height:min(1.8rem,18px);background-color:#cf0000;border-radius:50%;font-size:min(1.1rem,11px);color:#fff}.top-banner{position:fixed;top:0;left:0;right:0;max-width:800px;margin:auto;height:min(5.6rem,56px);display:flex;align-items:center;justify-content:center;background-color:#282828;z-index:100}.top-banner .iconfont{position:absolute;top:min(1.8rem,18px);right:min(1.8rem,18px);margin:auto}