.content_sider{max-height:calc(100vh - 40px);overflow-y:auto;position:sticky;scrollbar-width:none;top:40px;-ms-overflow-style:none}.content_sider::-webkit-scrollbar{display:none}.product_item{border:1px solid #f7f7f7;box-sizing:content-box;padding:4px 16px;transition:all .3s linear}.product_item:hover{border:1px solid #fff;box-shadow:4px 4px 20px #0000000f}.active{background-color:#0087d0;border-radius:2px;color:#fff}