body,p{
    margin: 0;
    border: 0;
    padding: 0;
    font-size: 18px;
    font-family: 'Microsoft Yahei','Helvetica Neue',Tahoma,Arial,'PingFangSC-Regular','Hiragino Sans GB',sans-serif;
  }
  header>img{
      display: block;
  }
  h3{
      color: #ffffff;
      font-size: 32px;
      margin-bottom: 42px;
  }
  header{
      height: 580px;
      background-image: url(./img/banner_pc.png);
      background-repeat: no-repeat;
  }
  nav>a{
      position: relative;
      text-decoration: none;
      color: #333333;
  }
  nav>a>img{
      width: 200px;
      margin-right: 10px;
  }
  nav>a>span{
      position: absolute;
      top: -34px;
      right: 30px;
      font-weight: bold;
      text-align: left;
      width: 100px;
  }
  .title{
      margin: auto;
      width: 1200px;
      padding-top: 24px;
  }
  main{
      width: 1200px;
      margin: auto;
  }
  section{
    position: relative;
    margin: 24px 0;
}
  .section_01{
      position: absolute;
      left: 580px;
      top: 42px;
  }
  .section_01_a{
      width: 250px;
      height: 36px;
      margin: 12px 24px 12px 0;
      display: inline-block;
      color: #333333;
      text-decoration: none;   
  } 
  .section_02{
    position: absolute;
    left: 100px;
    top: -5px;
  }
  .section_02_a{
    width: 330px;
    height: 36px;
    margin: 12px 24px 12px 0;
    display: inline-block;
    color: #333333;
    text-decoration: none;   
}
.section_03{
    position: absolute;
    left: 100px;
    top: -5px;
  }
.section_03_a{
    width: 330px;
    height: 36px;
    margin: 12px 24px 12px 0;
    color: #333333;
    text-decoration: none; 
    display: inline-block;  
}
.section_03_left,.section_03_right{
    display: inline-block;
    width: 520px;
    height: 400px;
    vertical-align:top;
}
.section_04{
    position: absolute;
    left: 100px;
    top: 454px;
}
.section_04>h3{
    display: inline-block;
    margin-right: 68px;
}
.section_04_top,.section_04_btn{
    color: #333333;
    text-decoration: none; 
    margin-right: 88px;
}
.toast{
    z-index: 100000;
    position: fixed;
    display: none;
    left: 34%;
    top: 25%;
    width: 30%;
    height: 35%;
    text-align: center;
    padding: 48px;
    background: #ffffff;
    border-radius: 1rem;
    margin: auto;
    box-shadow: 0 0.5rem 2rem rgba(75, 126, 255, 0.2);
}
.toast>img{
    width: 12rem;
}
.close{
    padding: 1rem;
    background: #4b7eff;
    color: #ffffff;
    border-radius: 2rem;
    width: 3rem;
    margin: auto;
    margin-top: 3rem;
}