html, body {
  margin: 0;
  padding: 0;
}
.aboutUsContent {
  width: 100%;
  height: 425px;
  overflow: hidden;
}
.aboutUsContent .mainContent {
  position: relative;
  width: 1200px;
  height: 100%;
  margin-left: calc(50% - 600px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 20;
}
.aboutUsContent .leftBox {
  width: 273px;
  height: 273px;
  overflow: visible;
  background-position: center;
  background-repeat: no-repeat;
  background-size: 100% 100%;
  background-image: url('/static/models-pi/img/about_us_bg.png');
}
.aboutUsContent .leftText {
  margin: 102px 0 0 -23px;
  width: 320px;
  height: 69px;
  font-size: 60px;
  font-weight: bold;
  color: var(--pi-color);
  line-height: 69px;
  text-align: center;
}
.aboutUsContent .rightBox {
  width: 873px;
  height: 277px;
  background: #FFFFFF;
  box-shadow: 0px 0px 25px 1px rgba(71,119,183,0.16);
  border-radius: 0px 0px 0px 0px;
  padding: 30px 28px;
  box-sizing: border-box;
  overflow-y: auto;
  text-overflow: ellipsis;
}
.aboutUsContent .aboutUsBg {
  position: absolute;
  left: 0;
  top: 0;
  width: 67%;
  height: 100%;
  background-position: center;
  background-repeat: no-repeat;
  background-size: 100% 100%;
  background-image: url('/static/models-pi/img/about_us_big_bg.png');
  z-index: 10;
}

@media screen and (max-width: 1200px) {
  .aboutUsContent{
    height: auto;
  }
  .aboutUsContent .mainContent{
    width: 100%;
    flex-direction: column;
    margin-left: 0;
  }
  .aboutUsContent .leftBox{
    /*display: none;*/
    background: none;
    height: auto;
    width:100%;
  }
  .aboutUsContent .leftText{
    font-size: 18px;
    line-height: 2;
    text-align: left;
    width: 95%;
    margin: 0 auto;
    height: auto;
    margin-top: 10px;
  }
  .aboutUsContent .rightBox{
    width: 95%;
    margin: 0 auto;
    padding: 0;
    height: auto;
    text-align: justify;
    box-shadow: 0px 0px;
  }
  .aboutUsContent .aboutUsBg{
    display: none;
  }
}