*{
    margin: 0;
    padding: 0;
}
a {
  text-decoration: none; /* 去掉下划线 */
  color: inherit; /* 继承父元素的颜色，或设置自定义颜色 */
}
.buts-box{
    display: flex;
    flex-direction: column;
  
}
@media (min-width: 769px){
        .top-background {
                display: flex;
                flex-direction:column;
                height: 700px; 
                background-image: url('image/banner-background.webp'); 
                background-size: cover; /* 使背景图片覆盖整个容器 */
                background-position: center; /* 将背景图片置于容器中央 */
                background-repeat: no-repeat; /* 防止背景图片重复 */
        }
        .logo{
           display: flex; 
            justify-content:space-between; 
            height: 50px;
            margin: 25px 0;
            margin-bottom: 100px;
        }
        .logo div{
            padding: 0 50px;
             border: 1px solid rgba(255, 255, 255, 0.5);
             line-height: 50px;
        }
        .logo img{
            height: 50px;
        }
        .y{
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .y img{
            height: 150px;
            margin: 25px 0;
            
        }
        .z{
            font-size: 50px;
            font-weight: 700;
        }
        .bg{
            width: 400px;
            height: 150px;
            border: 1px solid rgba(255, 255, 255, 0.5);
            margin: 0 10px;
            border-radius:5px;
            background-color: #ffffff;
            margin-top: 100px;
            display: flex;
            justify-content: center;
            align-items: center;
            text-align: center;
            flex-direction:column;
        }
        .zw{
            display: flex;
            justify-content: center;
            
        }
        .tablediv{
            width:1000px;margin:80px auto;display: flex;
        }
        .bg div{
            width: 500px;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        table {
          width: 100%;
          border-collapse: collapse;
        }
        
        table, th, td {
          border: 1px solid black;
        }
        
        th, td {
          padding: 8px;
          text-align: left;
        }
        
        tr:nth-child(even){background-color: #f2f2f2}
        .di{
            display:flex;
            justify-content:center;
            margin-bottom: 50px;
        }
        .li{
            display:flex;
            flex-direction:column;
            margin: 0 30px;
        }
        .li div{
            padding: 10px 0;
        }
        .imgg img{
            height:30px;
            margin-right: 20px;
            margin-left: 30px;
        }
        .imgg{
            padding-left:30px;
            
        }
        b{
            line-height: 40px;
        }
}
@media (max-width: 768px) {

/* 手机端样式 */
/* 全局样式 */
        * {
            margin: 0;
            padding: 0;
        }
        
        /* 顶部背景 */
        .top-background {
            display: flex;
            flex-direction: column;
            background-image: url('image/banner-background.webp');  
            background-size: cover; 
            background-position: center; 
            background-repeat: no-repeat; 
        }
        
        /*  logo 区域 */
        .logo {
            display: flex; 
            justify-content: space-between; 
            height: 30px;
            margin: 15px 0;
            margin-bottom: 100px;
        }
        
        .logo div {
            padding: 0 20px;
            border: 1px solid rgba(255, 255, 255, 0.5);
            line-height: 30px;
        }
        
        .logo img {
            height: 30px;
        }
        
        /* y 区域 */
        .y {
            display: flex;
            justify-content: center;
            align-items: center;
            max-width: 90%;
            margin: 0 auto;
        }
        
        .y img {
            height: 80px;
            margin: 15px 0;
        }
        
        /* z 区域 */
        .z {
            font-size: 25px;
            font-weight: 700;
        }
        
        /* bg 区域 */
        .bg {
            width: 80%;
            height: auto;
            border: 1px solid rgba(255, 255, 255, 0.5);
            margin: 0 auto;
            border-radius: 5px;
            background-color: #ffffff;
            margin-top: 30px;
            display: flex;
            justify-content: center;
            align-items: center;
            text-align: center;
            flex-direction: column;
            padding: 10px;
            margin: 10px;
        }
        
        /* zw 区域 */
        .zw {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            max-width: 90%;
            margin: 0 auto;
        }
         .tablediv{
            width:100%;margin:80px auto;display: flex;
        }
        .bg div {
            width: 100%;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        
        /* 表格样式 */
        table {
            width: 95%;
            border-collapse: collapse;
            font-size: 10px;
        }
        
        table, th, td {
            border: 1px solid black;
        }
        
        th, td {
            padding: 2px;
            text-align: left;
        }
        
        tr:nth-child(even) {
            background-color: #f2f2f2;
        }
        
        /* 底部 di 区域 */
        .di {
            display: flex;
            justify-content: center;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        
        /* li 区域 */
        .li {
            display: flex;
            flex-direction: column;
            margin: 10px auto;
            width: 90%;
            
        }
        
        .li div {
            padding: 5px 0;
        }
        
        /* imgg 区域 */
        .imgg img {
            height: 20px;
            margin-right: 10px;
            margin-left: 15px;
        }
        
        .imgg {
            padding-left: 15px;
        }
        
        b {
            line-height: 25px;
        }

}