/* 大屏幕（大桌面显示器，大于等于 1200px） */
       @media (min-width: 751px) {
           main {
               /* background-color: #F6F8FB; */
               /* width: 100vw; */
               /* font-size: 0px; */
               /* margin: 0 auto; */
           }

           .w {
               width: 1200px;
               margin: 0 auto;
           }

           .headerbox {
               /* background: url(../partimage/milk/topimg.png); */
               /* width: 100%; */
               min-width: 1200px;
               height: 474px;
               margin: 0 auto;
               background-size: 100% 100%;
               position: relative;
           }

           .topimg {
               width: 100%;
               height: 474px;
               /* width: 100vw; */
               position: absolute;
               object-fit: cover;
           }


           .header {
               min-width: 1200px;
               /* width: 1200px; */
               z-index: 99;
           }

           .top-content {
               position: absolute;
               top: 119px;
               /* left: 360px; */
           }

           .top-content h1 {
               font-family: Alibaba PuHuiTi;
               font-weight: 500;
               font-size: 36px;
               color: #FFFFFF;
               /* height: 35px;
            line-height: 80px; */
           }

           .top-content div {
               width: 100px;
               height: 4px;
               background: #F5F2F6;
               margin: 34px 0;
           }

           .top-content p {
               width: 534px;
               font-family: Alibaba PuHuiTi;
               font-weight: 400;
               font-size: 16px;
               color: #FFFFFF;
               /* line-height: 1.8; */
               height: 76px;
               line-height: 30px;
           }

           .milkbox {
               background: url(../partimage/milk/bg.png);
               /* width: 100%; */
               min-width: 1200px;
               height: 786px;
               margin: 0 auto;
               background-size: 100% 100%;
               padding: 70px 0;
               box-sizing: border-box;
           }

           .topstar {
               display: flex;
               justify-content: center;
               align-items: center;
               margin-bottom: 50px;
               height: 26px;
           }

           .topstar h1 {
               font-family: Alibaba PuHuiTi;
               font-weight: 400;
               font-size: 28px;
               color: #333333;
               margin: 0 8px;
           }

           .topstar img {
               width: 14px;
               height: 14px;
           }

           ul {
               display: flex;
               flex-wrap: wrap;
           }

           li {
               display: flex;
               /* justify-content: center; */
               flex-direction: column;
               align-items: center;
               width: 380px;
               height: 270px;
               border: 1px solid transparent;
               border-radius: 10px;
               background-clip: padding-box, border-box;
               background-origin: padding-box, border-box;
               background-image: linear-gradient(-90deg, #EEF9FF, #F4F9FD), linear-gradient(0deg, #FFFFFF, #E9F6FD);
               text-align: center;
               padding: 25px 37px 32px;
               box-sizing: border-box;
               margin-right: 30px;
           }

           li:nth-child(-n+3) {
               margin-bottom: 30px;
           }

           li:nth-child(3n) {
               margin-right: 0;
           }

           li img {
               width: 98px;
               height: 109px;
           }

           li h1 {
               font-family: Alibaba PuHuiTi;
               font-weight: 400;
               font-size: 22px;
               color: #333333;
               margin: 20px 0 10px;
           }

           li p {
               font-family: Alibaba PuHuiTi;
               font-weight: 400;
               font-size: 16px;
               color: #666666;
           }
       }