body, div, ul, li, ol, h1, h2, h3, h4, h5, h6, input, textarea, select, p, dl, dt, dd, a, img, button,
form, table, th, tr, td, tbody, article, aside, details, figcaption, figure, footer, header, hgroup,
menu, nav, section {
    margin: 0;
    padding: 0;
}
h1,h2,h3,h4,h5,h6{font-size:100%}   /*继承body设定的字体大小*/
body{font-family: "Microsoft YaHei",Tahoma,Arial,Simsun,sans-self;}
.clearfix:after{content:"."; display:block; visibility:hidden; height:0; clear:both;} /*除去浮动*/
.clearfix{zoom:1;}
.fl{float:left;}
.fr{float:right;}
a, a:visited ,a:hover,a:active{ text-decoration: none; color: #333;  }
a,button,input{-webkit-tap-highlight-color: rgba(0,0,0,0);-webkit-tap-highlight-color: transparent;}
ul,ol{list-style: none;margin:0;padding:0;}    /*当要添加小图标时可修改*/
img{vertical-align:middle;border:0;-ms-interpolation-mode:bicubic;} /*在IE下除去边框和底部空白*/
em,i{font-style: normal}  /*如需默认样式可修改*/
input,select,textarea{vertical-align:middle;outline:none;}  /*出去获得焦点下的蓝色边框*/
textarea{resize:none;}  /*禁止用户缩放文本框*/
table {border-collapse: collapse;border-spacing: 0;}
button,input[type="button"],input[type="reset"],input[type="submit"] {cursor:pointer;-webkit-appearance:button;-moz-appearance:button;} /*按钮初始化*/
input::-moz-placeholder,textarea::-moz-placeholder {color: #ccc;}   /*修改placeholder文字颜色*/
input:-ms-input-placeholder,textarea:-ms-input-placeholder {color: #ccc;}
input::-webkit-input-placeholder,textarea::-webkit-input-placeholder {color: #ccc;}
/*public*/
.w_1400{width: 1400px;margin:0 auto;}
.w_1300{width: 1300px;margin:0 auto;}
.w_1200{width: 1200px;margin:0 auto;}
/*public*/
/*padding*/
.pd_0_10{padding:0 10px;}
.pd_30_0{
    padding:30px 0;
}
.center{margin:auto;}
.margin-t5{margin-top: 5px;}
.margin-t9{margin-top: 9px;}
.margin-t10{margin-top: 10px;}
.margin-t15{margin-top: 15px;}
.margin-t20{margin-top: 20px;}
.margin-t30{margin-top: 30px;}
.margin-t40{margin-top: 40px;}
.margin-t50{margin-top: 50px;}
.margin-t55{margin-top: 55px;}
.margin-t60{margin-top: 60px;}
.margin-t70{margin-top: 70px;}
.margin-t80{margin-top: 80px;}
.margin-t90{margin-top: 90px;}
.margin-t100{margin-top: 100px;}
.margin-t150{margin-top: 150px;}
.banner{
  background: url(../images/duikou_1.jpg) no-repeat center top;
  height:500px;
}
.bg{
  background: url(../images/duikou_2.jpg) no-repeat center top;
}
.w_288 {
  font-size: 0;
  text-align: center;
  width: 1300px;
  margin:0 auto;
}
.w_288 li{
 width: 288px;
 display: inline-block;
 margin:0 10px 16px;
}
.w_288 li img{
  box-shadow: 4px 4px 10px 0 rgba(33,109,254,.56);
}
.w_288 li:first-child{
  margin-left:170px;
}
.w_288 li p{
  font-size:18px;
  color:#216dfe;
  line-height: 44px;
}
.f36{
  font-size: 36px;
  text-align: center;
  padding:15px 0px;
}
.f18{
  font-size: 18px;
  text-align: center;
  font-weight: bold;
  line-height: 50px;
}
.f24{
  font-size: 24px;
  text-align: center;
}
.zixun{
  text-align: center;
  padding:35px 0 20px;
}
.zixun a{
  display: inline-block;
  width: 310px;
  line-height: 50px;
  font-size: 22px;
  color:#fff;
  border-radius:50px;
}
.btc_216dfe{
  box-shadow: 0 0 10px 2px rgba(33,109,254,.56);
  background-color: #216dfe;
}

.w_384{
  font-size: 0;
}
.w_384 li{
  margin:0 8px 14px;
  display: inline-block;
}
.w_384 li img{
  box-shadow: 4px 4px 10px 0 rgba(255,132,23,.56);
}
.btc_ff8417{
  box-shadow: 0 0 10px 2px rgba(255,132,23,.56);
  background-color: #ff8417;
}
.flx{
  display: flex;
  justify-content: space-between;
  flex-flow: wrap;
}
.w_390 li{
  border-radius:20px;
  overflow: hidden;
  background-color: #fff;
  margin-bottom:20px;
}
.w_390 li .c_c{
  position: relative;
  padding:25px 10px 10px;
}
.w_390 li .c_c span{
  position: absolute;
  width:240px;
  text-align: center;
  top:-10px;
  left:0px;
  right:0;
  margin:auto;
  line-height:32px;
  color:#fff;
  background-color: #216dfe;
  border-radius:32px;
  padding:0 10px;
}
.w_390 li .c_c h5{
  font-size: 20px;
  margin-bottom:8px;
}
.w_390 li .c_c h5 em{
  font-size:16px;
  font-weight: 400;
}
.w_390 li .c_c a{
  width:288px;
  line-height:40px;
  color:#fff;
  font-size: 24px;
  background-color: #ff4c4c;
  display: block;
  margin:0 auto;
  text-align: center;
  border-radius:40px;
}
.btc_be60ff{
  box-shadow: 0 0 10px 2px rgba(100,96,255,.56);
  background-color: #be60ff;
}
.btc_ff4d4d{
  box-shadow: 0 0 10px 2px rgba(255,77,77,.56);
  background-color: #ff4d4d;
}
.bg1 {
  background: url(../images/bgf.jpg) no-repeat center top;
  padding: 52px 0 0;
  height: 500px;
}
.form_b {
  background-color: rgba(255, 255, 255, .9);
  width: 526px;
  text-align: center;
  padding: 10px 26px;
  box-sizing: border-box;
  margin:0 auto 30px;
  border-radius:10px;
  }
  
  .form_b h3 {
  font-size: 24px;
  position: relative;
  line-height: 36px;
  font-weight: bold;
  color:#009cff;
  }
  .form_b h3 span{
    color:#e50101;
  }
  .form_b p{
    font-size: 24px;
    font-weight: bold;
  padding-bottom:20px;
  color:#009cff;
  }
  .form_b h3 img {
  position: absolute;
  top: 0;
  right: 0;
  }
  
  .form_b input {
  width: 100%;
  line-height: 54px;
  outline: none;
  border: 2px solid #e5e5e5;
  padding-left: 48px;
  box-sizing: border-box;
  font-size: 20px;
  margin-bottom: 30px;
  }
  
  .form_b input:focus {
  border: 2px solid #fe5745;
  }
  
  .form_b .btn {
  width: 288px;
  text-align: center;
  margin: 0 auto 24px;
  }
  
  .form_b .btn input {
  padding: 0;
  
  display: block;
  background-color: #e90000;
  line-height: 50px;
  height: 50px;
  color: #fff;
  font-size: 28px;
  margin-bottom: 0;
  border-radius:50px;
  }
  .c_216dfe{
    color:#216dfe;
  }
  .c_ff8417{
    color:#ff8417;
  }
  .c_fff{
    color:#fff;
    padding:20px 0;
  }
.set_course_box { width: 1200px; display: flex; flex-wrap: wrap; justify-content: space-between; overflow: hidden; }
.set_course_box>li { width: 291px; text-align: center; overflow: hidden; position: relative; }
.set_course_box>li>img { background: #f9f6ea; width: 100%; height: 160px; margin-top: 12px; border-radius: 5px; }
.set_course_box>li>p { width: 100%; height: 40px; line-height: 40px; background: rgba(0,0,0,.4); position: absolute; top: 132px; color: #fff; border-bottom-right-radius: 5px; border-bottom-left-radius: 5px; }
.set_course_box>li>span { width: 100%; display: flex; justify-content: center; }
.set_course_box>li>span>a:first-child { background: #fff; border: 1px solid #e0e0e0; color: #606060; }
.set_course_box>li>span>a { height: 36px; line-height: 36px; text-decoration: none; font-size: 14px; padding: 0 25px; border-radius: 3px; }
.set_course_box>li>span>a:last-child { background: #fff; color: #606060; border: 1px solid #e0e0e0; margin-left: 20px; }
.set_course_box>li>span>a { height: 36px; line-height: 36px; text-decoration: none; font-size: 14px; padding: 0 25px; border-radius: 3px; }
.set_course_box>li>span>a:first-child:hover{background:#f5b544;border:1px solid #f5b544;color:#fff;}
.set_course_box>li>span>a:last-child:hover{background:#fb0018;color:#fff;border:1px solid #fb0018;margin-left:20px;}