.about{
  position: relative;
}
.main3{
  padding-top: 90px;
}

.page-title{
  font-size: 16px;
  font-weight: bold;
  text-align: center;
  position: relative;
}
.page-title::after{
  content: " ";
  display: block;
  position: absolute;
  background: url("https://www.ingtube.com/assets/about/9.png") center center no-repeat;
  background-size: 100%;
  bottom: -10px;
  left: 50%;
  margin-left: -15px;
  width: 30px;
  height: 10px;
}
.main1 {
  padding-top: 55px;
}
.main1 .item {
  padding-bottom: 20px;
}
.main1 .item .wrapper {
  display: inline-block;
  text-align: center;
}
.main1 .item .wrapper .img2{
  margin-top: -100px;
}

.main2{
  padding-top: 60px;
  padding-bottom: 30px;
}
.main2 img {
  margin: 50px auto 0 auto;
  width: 300px;
  display: block;
}
.footer{
  font-size: 10px;
  color: #b1b1b2;
  z-index: 103;
  background: #3C3E3F;
}
.footer a{
  color: #b1b1b2;
}