/*页面中通用部分*/
.clear{overflow: hidden;}
.clears::after{
  content: ".";
  clear: both;
  display: block;
  overflow: hidden;
  font-size: 0;
  height: 0;
}
.clears{
  zoom: 1;
}

.wrap{width: 100%;background: #01178e;overflow: hidden;}
.banner{position: relative;height: 469px;}
.banner img{
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%,-50%);
}
.box{
  position: relative;
  width: 1138px;
  margin: -50px auto 0;
  z-index: 3;
}
.box img{display: block;}
.itcast_click{cursor: pointer;}
.box .boxbtn{position: relative;}
.box .boxbtn .btn1{
  position: absolute;
  left: 66px;
  top: 1080px;
  width: 1003px;
  height: 160px;
}
.box .boxbtn .btn2{
  position: absolute;
  left: 468px;
  bottom: 50px;
  width: 202px;
  height: 60px;
}