.top_navlx {
    width: 100%;
    height: 136px;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 10;
  }
  
  .top_navlx .top_yi {
    width: 100%;
    height: 76px;
    background-color: #fff;
  }
  
  .top_navlx .top_yi .top_logo {
    width: 248px;
    height: 48px;
    float: left;
    margin-top: 15px;
  }
  
  .top_navlx .top_yi span {
    float: right;
    line-height: 76px;
    font-size: 26px;
    color: #1a7af8;
    padding-left: 45px;
    background: url(../img/top_tel.jpg) left center no-repeat;
  }
  
  .top_navlx .top_er {
    width: 100%;
    height: 60px;
    background-color: #dbf1ff;
  }
  
  .top_navlx .top_er .wrapper {
    display: flex;
    justify-content: space-between;
  }
  
  .top_navlx .top_er .item {
    font-size: 18px;
    color: #030303;
    line-height: 60px;
  }
  
  .top_navlx .top_er .item_yc {
    position: relative;
    cursor: pointer;
  }
  
  .top_navlx .top_er .item_yc span {
    font-size: 18px;
    color: #030303;
    line-height: 60px;
  }
  
  .top_navlx .top_er .item_yc .item_list {
    position: absolute;
    top: 60px;
    display: none;
    padding-bottom: 15px;
    border-radius: 0 0 10px 10px;
    background-color: #fff;
    box-shadow: 0 0 16px 2px rgba(54, 107, 169, 0.1);
  }
  
  .top_navlx .top_er .item_yc .item_list a {
    display: block;
    font-size: 16px;
    color: #555;
    line-height: 18px;
    margin-top: 12px;
    padding-left: 20px;
  }
  
  .top_navlx .top_er .item_yc:hover .item_list {
    display: block;
  }
  
  .top_navlx .top_er .item_yc::after {
    position: absolute;
    content: '';
    border: 7px solid transparent;
    border-top-color: #1a7af8;
    top: 27px;
    right: -17px;
  }
  
  .top_navlx .top_er .yazhou .item_list {
    width: 110px;
    left: -30px;
  }

  .top_navlx .top_er .xiaoyuzhong .item_list {
    width: 110px;
    left: -30px;
  }
  
  .top_navlx .top_er .ouzhou .item_list {
    width: 170px;
    left: -68px;
  }
  
  .top_navlx .top_er .ouzhou .item_list a {
    width: 85px;
    float: left;
    padding-left: 0;
  }

  .top_navlx .top_er .item_yc .item_list a:hover{
    color: #1a7af8;
  }
  
  .top_navlx .top_er .ouzhou .item_list a:nth-child(odd) {
    text-indent: 15px;
  }
  
  .top_navlx .top_er .qita .item_list {
    width: 126px;
    left: -15px;
  }