.banner {
  width: 100%;
  height: 400px;
  font-family: PingFangSC-Medium, "Microsoft Yahei", sans-serif;
  background: url(../images/about_us/banner-about_us@1x.png) no-repeat;
  background-size: cover;
}
.banner h2 {
  padding-top: 148px;
  font-size: 48px;
  color: #fff;
}
.banner p {
  margin-top: 60px;
  font-size: 18px;
  color: #fff;
  line-height: 32px;
}
.banner a {
  position: absolute;
  left: 0;
  top: 465px;
  width: 140px;
  height: 40px;
  background-color: #f47820;
  color: #fff;
  line-height: 40px;
  font-size: 20px;
  text-align: center;
}
.dean .main {
  width: 1000px;
  margin: auto;
}
.dean .main .image {
  margin: 60px auto 0px;
  width: 620px;
}
.dean .main .image img {
  width: 100%;
}
.dean .main p {
  font-size: 20px;
  color: #1B2C51;
  line-height: 38px;
  margin: 70px 0px 42px 0px;
  text-align: justify;
  text-indent: 2em;
}
.dean .main .time {
  text-align: right;
  font-size: 20px;
  color: #1B2C51;
}
.dean .main .name {
  font-size: 20px;
  color: #1B2C51;
  line-height: 32px;
  width: 620px;
  margin: 20px auto 0px;
  text-align: center;
}
.dean .main .p_bottom {
  margin-bottom: 0px;
  margin-top: 35px;
  text-indent: 2em;
}
.dean .main .p_bottom:last-of-type {
  margin-top: 0px;
  margin-bottom: 170px;
}