*{padding: 0;margin: 0;font: 16px 'PingFang SC',Arial,'Microsoft YaHei',sans-serif;}
   
.base{width: 60%;height: 100%; margin: 0 auto;}
.content{ width: 100%; height: 20%;padding-top: 10%;}
a {text-decoration: none;color: #000;}
.logo{ text-align: center;}
.logo img{ width: 120px;height: 56px;}
.s{ width: 100%;height: 100%; text-align: center;} 
.search{width:512px;height:16px;padding:12px 16px;font-size:16px;margin:0; outline:0; box-shadow:none; border-radius:10px 0 0 10px;border:2px solid #c4c7ce;background:#fff;color:#222;overflow:hidden;}
.search:focus{ border-color: royalblue;}
    .buttn_{
       height:45px;
       width: 100px;
       display: inline-block;
       color: #fff;
      background-color:  royalblue;
      border-radius: 0 10px 10px 0;
      font-size: 17px;
      border: none;
      margin: 0 ;
      vertical-align: top;
      outline:0; box-shadow:none;
    }
    .zx{
        margin: 10% 0 0 0;
        float: left;
        width: 50%;
       
    }
    .default_a{
       text-decoration: none;
        margin: 0 20px 0 0;
        padding-bottom: 3px;
        color: #9195a3;
        font: 14px/24px 'PingFang SC',Arial,'Microsoft YaHei',sans-serif;
    }
    .a_select{
        color: #000;
        border-bottom: 2px solid royalblue;

    }
   
    .def_ul h4{
        overflow: hidden;
        font-weight: 400;
        margin-bottom: 10px;
        
    }
    .zx ul li font {
       padding-top: 10px;
       font-size: 10px;
       color: #9195a3;
    }

    .def_ul{    
        padding-top: 10px;
    }
    .def_ul li{
        list-style: none;
        margin: 20px 0;
    }

    a:hover{
        color:royalblue;
    }
    .top{
        margin: 10% 0 0 0; 
        float: right; 
        width: 30%;
    }
    .top ul{    
        padding-top: 5px;
    }
    .font_number font{
        float: left;
       margin-right: 10px;
       font-size: 12px;
       width: 20px;
       text-align: center;
       color: #9195a3;
    }
    .top_def li{
        list-style: none;
        margin: 10px 0;
       
    }
    .number_font_def{
        
        font-size: 10px;
        display: inline-block;
        height: 20px;
        line-height: 20px;
        background-size: 100% 100%;
    }
    .font_1{
        background-image: url(../img/top_1.png);
        
    }
    .font_2{
        background-image: url(../img/top_2.png);
     
    }
    .font_3{
        background-image: url(../img/top_3.png);
    }
    .footer{
       width: 100%;
       color: #000;
        position:fixed; bottom:10px; 
        margin: 0 auto;
        text-align: center;
  
    }
   
    .footer div{
        display: inline-block;
        margin-left: 20px;
    }