.about {
  padding-bottom: 60px;
}
/*head*/
.about-head .about-head__pic {
  width: 100%;
  height: 320px;
}
/*content*/
.about-content .about-title {
  margin-top: 51px;
  text-align: center;
}
.about-content .about-desc {
  margin-top: 40px;
  padding: 0 40px;
}
.about-desc__item {
  font-size: 14px;
  color: #3A3C3C;
  line-height: 30px;
}