.top {
    background: url(../images/banner_3.png);
    /* height: 220px; */
  }
  
  .head {
    width: 1200px;
    margin: 0 auto;
    height: 220px;
  }
  
  .h-top {
    width: 1200px;
  }
  
  .search-box {
    margin-top: 18px;
    padding-bottom: 0px;
  }
  
  .logo a>div {
    display: inline-block;
  }
  
  .logo img {
    width: 54px;
    height: 58px;
  }
  
  .logo a>div:nth-child(1) {
    width: 63px;
    height: 63px;
  }
  
  .logo a>div:nth-child(2) h1 {
    font-weight: 700;
    font-size: 30px;
    color: #FFFFFF;
  }
  
  .logo a>div:nth-child(2) p {
    font-size: 13px;
    color: #FFFFFF;
    letter-spacing: 1.5px;
    text-align: center;
  }
  
  .search-box {
    width: 540px;
  }
  
  .search-box p {
    margin-left: 0px;
    font-size: 14px;
    color: #FFFFFF;
    padding-bottom: 9px;
  }
  
  .sear {
    margin-left: 0px;
  }
  
  .nav {
    height: 56px;
    background: #2355CA;
    line-height: 56px;
  }
  
  .nav ul {
    width: 1200px;
    height: 56px;
    line-height: 56px;
    margin: 0 auto;
    font-size: 20px;
    overflow: hidden;
  }
  
  .nav ul li {
    float: left;
    text-align: center;
    color: #fff;
    width: 200px;
  }
  
  .nav ul li a {
    color: #fff;
  }
  
  .nav ul li:hover {
    background: #4d88e8;
  }