.header-body{
    height: 60px;
    display: flex;
    justify-content:space-between;
  }
  .header-logo-box{
      width: 70%;
  }

  .header-logo{
      width: 100%;
      height: 40px;
      margin-top:10px;
  }

  .header-title{
      width: 30%;
  }
  .header-nav-phone{
    line-height: 60px;
    text-align: right;
  }
  .header-nav-phone-dropdown{
    width: 32px; 
    height: 32px; 
    vertical-align: middle;
  }
/** 移动端 */
@media (max-width: 767px) {
    .header-body{
      height: 60px;
    }
    .header-logo-box{
        width: 70%;
    }
    .header-title{
        width: 30%;
    }
    .header-nav-phone{
      width: 100%;
    }
    .header-nav-computer{
      display: none;
    }
    .header-dropdown {
      position: relative;
      display: inline-block;
      width: 100vw;
    }

    /* 下拉内容 (默认隐藏) */
    .header-dropdown-content {
      display: none;
      position: absolute;
      background-color: #f9f9f9;
      width: 100vw;
      box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
      z-index: 1;
    }

    /* 鼠标悬停时显示下拉内容 */
    .header-dropdown:hover .header-dropdown-content {
      display: block;
    }

    .header-nav-ul-phone {
        list-style-type: none;
        font-size: 14px;
    }
  
    .header-nav-ul-phone a{
      text-decoration: none;
      font-size: 18px;
    }
}

/** 中等屏幕 */
@media (min-width: 768px) and (max-width: 991px) {
    .header {
        height: 80px;
        width: 100%;
        background: #fff;
        display: flex;
        justify-content: center;
    }

    .header-body{
        width: 1200px;
        height: 80px;
        display: flex;
        justify-content:space-between;
    }

    .header-logo-box{
        width: 30%;
    }

    .header-logo{
        height: 60px;
        margin-top:10px;
    }

    .header-title{
        width: 70%;
        
    }

    .header-nav {
        display: flex;
        list-style-type: none;
        line-height: 40px;
        float: right;
        font-size: 14px;
    }

    .header-nav li {
        padding: 5px;
        line-height: 40px;
    }

    /* 取消a标签下划线 */
    .header-nav-link{
        text-decoration: none;
    }
    /*访问后颜色为黑色，不变 */
    .header-nav-link:visited{
      color: #000;
    }

    .header-nav-phone{
      display: none;
    }

    .header-dropdown-content {
      display: none;
    }

}

/** 大屏幕 */
@media (min-width: 992px) and (max-width: 1199px) {
    .header {
        height: 80px;
        width: 100%;
        background: #fff;
        display: flex;
        justify-content: center;
    }

    .header-body{
        width: 1200px;
        height: 80px;
        display: flex;
        justify-content:space-between;
    }

    .header-logo-box{
        width: 30%;
    }

    .header-logo{
        height: 60px;
        margin-top:10px;
    }

    .header-title{
        width: 70%;
        
    }

    .header-nav {
        display: flex;
        list-style-type: none;
        line-height: 40px;
        float: right;
        font-size: 14px;
    }

    .header-nav li {
        padding: 5px;
        line-height: 40px;
    }

    /* 取消a标签下划线 */
    .header-nav-link{
        text-decoration: none;
    }
    /*访问后颜色为黑色，不变 */
    .header-nav-link:visited{
      color: #000;
    }

    .header-nav-phone{
      display: none;
    }

    .header-dropdown-content {
      display: none;
    }
}

/** 超级大屏幕 */
@media (min-width: 1200px) {
    .header {
        height: 80px;
        width: 100%;
        background: #fff;
        display: flex;
        justify-content: center;
    }

    .header-body{
        width: 1200px;
        height: 80px;
        display: flex;
        justify-content:space-between;
    }

    .header-logo-box{
        width: 30%;
    }

    .header-logo{
        height: 60px;
        margin-top:10px;
    }

    .header-title{
        width: 70%;
        
    }

    .header-nav {
        display: flex;
        list-style-type: none;
        line-height: 40px;
        float: right;
        font-size: 14px;
    }

    .header-nav li {
        padding: 5px;
        line-height: 40px;
    }

    /* 取消a标签下划线 */
    .header-nav-link{
        text-decoration: none;
    }
    /*访问后颜色为黑色，不变 */
    .header-nav-link:visited{
      color: #000;
    }

    .header-nav-phone{
      display: none;
    }

    .header-dropdown-content {
      display: none;
    }
}