* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

header {
    display: block;
    justify-content: space-between;
    align-items: center;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.logo {
    font-size: 3vh;
    font-weight: bold;
    color: #333;
}

nav{position: absolute;right:0;top: 0;width:100%;z-index: 9;text-align: right;}
nav div{display: block!important;font-size: 4em;color:#999;line-height: 60px;margin-right: 10px}
nav ul {
    width:100%;
    list-style: none;
    z-index: 9999;
    background-color: #fff;
    display: none
}

nav li {
    flex: 1;
    text-align: center;
    line-height: 40px;
    border-bottom: 1px solid #ccc;
    margin:0 10px;
}

nav a {
    font-size: 2vh;
    color: #333;
    text-decoration: none;
    transition: color 0.3s;
}

nav a:hover {
    color: #ff6600;
}


#banner div div {
    min-width: 600px
}

.news-content{margin:10px;}

.product-list{
    display: flex;align-content: center;flex-wrap:wrap;width:1600px;
}
.product-list li{flex:0 0 9%;text-align: center;width: 100%;height:200px;margin:10px 10px;overflow:hidden;border:  1px solid #eee}
.product-list li div:first-child{width:100%;height: 150px;display: flex;justify-content:center;align-items: center}
.product-list li div img{width:100%;}
.product-list-wrapper{width:100%;overflow: hidden}
.product-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex; /* 自动排列 */
  justify-content: space-between; /* 留出空白间隙 */
  animation: scroll 20s linear infinite; /* 应用动画 */
}

@keyframes scroll {
  0% {
    transform: translateX(0); /* 初始位置 */
  }
  100% {
    transform: translateX(-50%); /* 滚动到左侧 */
  }
}

.product{max-width: 1200px;margin:10px;}

.productlist{display: flex;align-content: center;flex-flow: row wrap;}
.productlist li{flex:0 0 33%;text-align: center;width: 100%;margin:10px calc(0.3%/3);overflow:hidden;border:1px solid #efefef;}
.productlist li div img{width:100%;}

.productlist li div:first-child{display: flex;justify-content:center;align-items: center;height: 100px;}




.foot{height: 100px;background-color: #333;color:#fff}
.foot a{color: #fff;}
.foot ul{display: flex;overflow: hidden;text-align:center;}
.foot li{text-align: center;text-align: center;line-height: 50px;flex:1;}
.foot div{flex:1;}