.row{margin:0;}
.map{
  width: 100%;
  height: 716px;
  background: url(../images/map.jpg) no-repeat center center;
  background-size: 100% 100%;
  margin-top: 77px;
}
.computer{
  width: 660px;
  height:387px;
  background-size: 100% 100%;
  margin: 0 auto;
   margin-top:57px;
}
.computerTxt{
  text-align: center;
}
.computerTxt>h2{
  color:#000;
  padding-top: 77px;
}
.computerTxt>h2>span{
  color:#21b4ff;
}
.download{
  width: 240px;
  height:63px;
  line-height: 63px;
  text-align: center;
  color:#fff;
  border-radius: 30px;
  background: #21b4ff;
  font-size:22px;
  display: block;
  margin: 50px auto 0 auto;
}
.download:hover{
  color:#fff;
}

.tips{text-align:center;font-size:1.2em;}
.tips a{color:#21b4ff;}