h3{font-family: "微软雅黑";font-weight: normal;}
body{width: 100%; height: 100%;}

.bg{position: relative;}
.bg_1{width: 100%;}
.bg_col{background: #013485;position: relative; width: 100%; padding: 4% 0;}
.route{width: 30%; margin-left: 20%;}
.map{width: 40%;}
.btn1{position: absolute; right: 20%;top: 48%; width: 20%;}
.btn2{position: absolute; top: 90%; right: 21%; width:12%;}
.btn3{position: absolute; top: 94%; right: 21%; width:12%;}