html,
body,
.container {
  padding: 0;
  margin: 0;
  width: 100%;
  height: 100%;
}
.container {
  position: relative;
  text-align: center;
}
.container .footer {
  padding: 6px;
  color: #fff;
  font-size: 14px;
  background: #3f3f3f;
}
.container .footer a {
  color: #fff;
  text-decoration: none;
  transition: color 0.1s linear;
}
.container .footer a:hover {
  color: #1890ff;
}
.banner {
    width: 100%;
    text-align: center;
}
.banner img {
    width: 100%;
    max-height: 450px;
}
.introduction {
    background: #f4f7fa;
    min-height: 200px;
}
.content {
    display: inline-block;
    width: 70%;
    max-width: 1200px;
    text-align: left;
    color: #555;
    line-height: 1.85;
}
.title {
    color: #888;
    text-align: center;
    font-weight: 500;
    font-family: serif;
}
.team-img {
    flex: 1;
    width: 30%;
    margin: 6px;
}
.flex-around {
    display: flex;
    justify-content: space-around;
}
.address {
    padding-bottom: 20px;
    background: url('https://shanshu.ai/_nuxt/img/aboutSec05-bg01.2893947.png') no-repeat 50%/cover;
}
.address h2.title {
    margin-bottom: 0;
}
.address h3.title {
    margin: 0;
}