.mainzhichi {
}
.mainzhichi h2 {
  margin-top: 60px;
}
.mainItem {
  padding: 60px 0;
}
.mainItem li {
  position: relative;
}
.mt50 {
  margin-top: 50px;
}
.mainItem h3 {
  font-size: 20px;
  font-family: Source Han Sans CN;
  font-weight: 400;
  color: #333333;
}
.mainItem p {
  font-size: 14px;
  font-family: Source Han Sans CN;
  font-weight: 300;
  color: #666666;
}
.mainItem li .infoText {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%);
}
.infoText h3 {
  color: #fff;
}
.infoText p {
  color: #fff;
}