html {
  font-size: 12px;
}

html .padd0 {
  padding: 0;
}

@media screen and (min-width: 750px) {
  html .topBg {
    height: 600px;
    background-image: url("../img/bigPict.png");
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
  }
  html .center {
    margin-top: 20px;
    opacity: 1;
    background: #f5f5f5;
    border-radius: 20px;
    display: flex;
    padding-bottom: 30px;
    display: flex;
  }
  html .center .left {
    display: flex;
    flex-direction: column;
    margin-left: 60px;
    margin-top: 60px;
	flex: 1;
  }
  html .center .left .leftTop {
    width: 80px;
    height: 80px;
  }
  html .center .left .leftTit {
    font-size: 28px;
    font-family: PingFangSC, PingFangSC-Semibold;
    font-weight: 600;
    text-align: left;
    color: #333333;
    margin-top: 30px;
  }
  html .center .left .leftCen {
    margin-top: 30px;
    font-size: 16px;
    font-family: PingFangSC, PingFangSC-Regular;
    font-weight: 400;
    text-align: left;
    color: #333333;
  }
  html .center .left .downBtn {
    display: flex;
    margin-top: 40px;
    margin-bottom: 8px;
  }
  html .center .left .downBtn .btnO {
    width: 130px;
    height: 50px;
    opacity: 1;
    background: rgba(216, 216, 216, 0);
    border: 1px solid #0072ff;
    border-radius: 26px;
    line-height: 50px;
    text-align: center;
    margin-right: 30px;
  }
  html .center .left .downBtn .btnT {
    width: 130px;
    height: 50px;
    opacity: 1;
    background: #0072ff;
    border-radius: 25px;
    line-height: 50px;
    text-align: center;
    color: #FFFFFF;
  }
  html .center .right {
	flex: 2;
	text-align: center;
  }
  html .center .imgRight {
    max-width: 22%;
    margin: auto;
    margin-right: 15px;
    margin-bottom: 0;
    margin-top: 50px;
  }
}

@media screen and (max-width: 750px) {
  html .topBg {
    margin-top: .2rem;
    height: 2.34rem;
    background-image: url("../img/bigPict.png");
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
  }
  html .center {
    margin-top: 0.6rem;
    padding: .2rem .2rem .2rem .2rem;
    opacity: 1;
    background: #f5f5f5;
    border-radius: .2rem;
    display: flex;
    width: 6.5rem;
  }
  html .center .left {
    display: flex;
    flex-direction: column;
	flex: 1;
  }
  html .center .left .leftTop {
    width: 0.8rem;
    height: 0.8rem;
  }
  html .center .left .leftTit {
    font-size: .15rem;
    font-family: PingFangSC, PingFangSC-Semibold;
    font-weight: 600;
    text-align: left;
    color: #333333;
    margin-top: .3rem;
  }
  html .center .left .leftCen {
    margin-top: .3rem;
    font-size: .12rem;
    font-family: PingFangSC, PingFangSC-Regular;
    font-weight: 400;
    text-align: left;
    color: #333333;
    overflow: hidden;
  }
  html .center .left .downBtn {
    display: flex;
    margin-top: .4rem;
    font-size: .12rem;
  }
  html .center .left .downBtn .btnO {
    width: 1.3rem;
    height: .5rem;
    opacity: 1;
    background: rgba(216, 216, 216, 0);
    border: 1px solid #0072ff;
    border-radius: .26rem;
    line-height: .5rem;
    text-align: center;
    margin-right: .3rem;
  }
  html .center .left .downBtn .btnT {
    width: 1.3rem;
    height: .5rem;
    opacity: 1;
    background: #0072ff;
    border-radius: 25px;
    line-height: .5rem;
    text-align: center;
    color: #FFFFFF;
  }
  html .center .right {
	flex: 2;
	text-align: center;
  }
  html .center .imgRight {
    max-height: 2.4rem;
    max-width: 2rem;
    position: relative;
  }
}