.about_pas{
  height: 850px;
 position: relative;
}
.about_page{
 width: 100%;
 height: 373px;
 margin-top: 260px;
 display: flex;
 justify-content: start;
 align-items: center;
}
.about_page_l{
  margin-right: 40px;
}
.about_page_r{
height: 100%;
padding-top: 10px;
}
.about_page_r_t{
  font-size: 26px;
  font-family: PingFangSC-Medium, PingFang SC;
  font-weight: 500;
  color: #333333;
  line-height: 42px;
}
.about_page_r_c{
  width: 428px;
height: 40px;
font-size: 18px;
font-family: PingFangSC-Medium, PingFang SC;
font-weight: 500;
color: #333333;
line-height: 40px;
}
.about_page_r_b{
  width: 661px;
height: 252px;
font-size: 16px;
font-family: PingFangSC-Regular, PingFang SC;
font-weight: 400;
color: #666666;
line-height: 36px;
}