.banner {
  width: 100%;
  height: 500px;
  margin: 80px auto 0;
  background: url('../images/index/banner4.png') no-repeat;
}
.banner .banner-wrapper {
  width: 920px;
  height: 500px;
  margin: 0 auto;
  text-align: center;
  color: #FFFFFF;
}
.banner .banner-title {
  font-size: 40px;
  line-height: 100px;
  padding-top: 130px;
}
.banner .banner-dec {
  width: 900px;
  margin: 0 auto;
  font-size: 18px;
  line-height: 40px;
  opacity: 0.7;
}
.contact {
  margin: 50px auto 0;
}
.contact .type-list {
  width: 840px;
  height: 40px;
  margin: 25px auto;
}
.contact .type-list li{
  float: left;
  width: 350px;
  height: 40px;
  margin: 0 0 100px 70px;
}
.contact .icon {
  float: left;
  width: 40px;
  height: 40px;
  margin-right: 10px;
}
.contact .text {
  font-size: 20px;
  color: #333333;
  line-height: 40px;
}
@media screen and (min-width: 1920px) {
  .banner {
    background-size: 100% auto;
  }
}