.banner {

  width: 1920px;
  margin: auto;
  overflow: hidden;
}

.main .about_introduce {
  font-size: 20px;
  font-weight: 100;
  /* text-align: center; */
  line-height: 50px;
  color: rgb(116, 117, 115);
}

.main .about_introduce_en {

  font-size: 20px;
  margin: 0 320px;
  font-weight: 100;
  line-height: 50px;
  color: rgb(116, 117, 115);
  padding-top: 70px;
}

.main .about_introduce .title {
  font-weight: 600;
  font-size: 27px;
  color: black;
  margin-top: 50px;
}

.main .about_introduce_en .title {
  font-weight: 600;
  font-size: 27px;
  text-align: center;
  color: black;
  margin-top: 50px;
}

.main .about_introduce:last-child {
  margin-bottom: 46px;
}