.wrap {
  margin: 0 auto;
  width: 1000px;
  /* border: 1px solid red; */
}

.banner {
  height: 150px;
  background: url('../img/banner.jpg');
  background-position: center center;
  background-size: cover;
}

.nav {
  line-height: 50px;
  background-color: #1F7DC0;
  font-size: 20px;
  box-shadow: 0px 0px 3px 2px rgba(0,0,0,0.3);
}

.nav a {
  box-sizing: border-box;
  padding: 10px 30px;
  color: #fff;
  font-weight: 700;
}
.content {
  position: relative;
  height: 600px;
  background: url('../img/高铁.jpg') no-repeat;
  background-position: top center;
  background-size: cover;
}
.box {
  position: absolute;
  top: 100px;
  left: 100px;
  height: 320px;
  width: 320px;
  box-sizing: border-box;
  transform: rotate(50deg);
}
.box span {
  display: inline-block;
  height: 150px;
  width: 150px;
  margin:3px 0px ;
  background-color: rgba(255,255,255,0.3);
  text-align: center;
  transition: 0.5s all;
}
.box span:hover {
  transform: scale(1.1);
}
.box span  a {
  display: inline-block;
  font-size: 36px;
  line-height: 150px;
  transform: rotate(-50deg);
  color: #fff;
  font-weight: 700;
  -webkit-text-stroke:1px orange ;
}
.footer {
  color: #fff;
  text-align: center;
  line-height: 50px;
  margin-top: 10px;
  background: #1F7DC0;
}