.about .about-nav {
  width: 1100px;
  padding-bottom: 30px;
  margin: 0 auto;
  margin-bottom: 30px;
  min-height: 440px;
  background: #fff;
  margin-top: 20px;
}
.about .about-nav h1 {
  padding-top: 34px;
  margin-left: 26px;
  line-height: 38px;
  font-family: MicrosoftYaHei;
  font-size: 24px;
  letter-spacing: 0;
  color: #414141;
}
.about .about-nav .ppc {
  margin-top: 30px;
  margin-left: 26px;
  width: 80%;
}
.about .about-nav .ppc p {
  float: left;
  width: 300px;
  margin-right: 55px;
  line-height: 26px;
  font-family: PingFangSC-Medium;
  font-size: 14px;
  color: #343434;
  letter-spacing: 0;
}
.about .about-nav .conxt-pic {
  margin-left: 26px;
  margin-right: 34px;
  margin-top: 20px;
}