body {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: 微软雅黑,Helvetica,Arial,sans-serif;
    background-color: #f3f4f5;
  }

  a {
    color: #2C29FC;
    text-decoration: none;
  }

  a:hover {
    color: blue;
  }

  #header {
    height: 60px;
    background-color: #333;
  }

  #logo {
    margin: 20px 100px 0px 100px;
    float: left;
  }

  #logo font {
    font-family: Arial;
    font-size: 20px;
    color: #eee;
  }

  #menu {
    margin-left: 60%;
    
  }

  #menu ul {
    margin: 0;
    list-style-type: none;
    white-space: nowrap;
  }

  #menu ul a {
    text-align: center;
    color: #bfcbd9;
  }

  #menu ul a:hover,
  #menu .is-active {
    color: #ffffff;
  }

  #menu ul li {
    width: 25%;
    line-height: 60px;
    float: left;
    white-space: nowrap;
  }

  #menu ul li:hover {
    background: #000000;
  }


 .title{
      position: absolute;
      top: 10%;
      left: 10%;
      background-color: rgba(0, 0, 0, 0.4);
      color: #fff;
      font-size: 28px;
      padding: 20px;
    
  }

  .declarition {
    position: absolute;
    /* float: right; */
    margin-top: 250px;
    margin-left: 55%;
    /* display: inline-block; */
    background-color: rgba(0, 0, 0, 0.4);
    color: #fff;
    font-size: 14px;
    padding: 5px;
  }

  .content1{
      width: 100%;
      height: 65rem;
      background-size: cover;
  }
  .content2{
      padding: 60px 0;
      text-align: center;
      background-color: #fff;
  }

  .content2 h2 span{
      display: inline-block;
      margin-bottom: 10px;
      color: #000000;
      font-size: 24px;
  }
  
  .content3 {
      height: 460px;
      background: url("./content3.webp");
      background-size: cover;
      color: #fff;
      text-align: center;
      display: flex;
      justify-content: center;
  }
  .center {
      padding: 20px;
      border-radius: 6px;
  }

  .content3 h2 {
    font-size: 20px;
    /* margin-bottom: 10px; */
    /* background: rgba(0, 0, 0, 0.1); */
    color: #fff;
    /* text-align: left; */
    /* padding: 10px 20px; */
    display: table;
  }

  .content4{
  
    width: 100%;
    background: white;
    text-align: center;
    padding: 60px 0;
  }

  .w60 {
    width: 60%;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .content4 img{
      width: 50%;
  }

  .content5{
      text-align: center;
      padding: 60px 0;
  }

  h1{
      font-size: 28px;
      margin-bottom: 30px;
  }
  h2 {
      font-size: 20px;
      color: #666;
      margin-bottom: 14px;
  }

  #footer {
    display: block;
    height: 40px;
    line-height: 40px;
    margin: 10 auto;
    bottom: 0;
    width: 100%;
    text-align: center;
    color: #555555;
    font-family: Arial;
    font-size: 12px;
    letter-spacing: 1px;
    /*必须清除浮动,才能换行*/
    clear: both;
  }