.img-box {
  width: 100%;
  height: 500px;
  background-image: url(../images/banner-about.jpg);
  -webkit-background-size: cover;
  background-size: cover;
  background-position-y: -80px;
  margin-bottom: 64px;
}
.img-box .main {
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
}
.img-box h2 {
  padding-left: 65px;
  font-size: 46px;
  font-weight: 400;
  color: #ffffff;
  line-height: 80px;
}
.content {
  margin-bottom: 90px;
}
.about-title {
  font-size: 48px;
  color: #22c999;
  font-weight: 500;
  line-height: 110px;
}
.about-title-sub {
  font-size: 35px;
  line-height: 50px;
  margin-bottom: 30px;
}
.about-content {
  font-size: 20px;
  color: #666666;
  font-weight: 200;
  line-height: 36px;
}
.qrcode {
  position: absolute;
  top: 50%;
  margin-top: -125px;
  right: 0;
}
.qrcode img {
  border: 1px solid #22c999;
  border-radius: 5px;
  width: 250px;
}
@media (max-width: 768px) {
  .img-box {
    -ms-background-position-y: 0;
    background-position-y: 0;
  }
  .qrcode {
    display: none;
  }
}
@media (max-width: 480px) {
  .img-box h2 {
    font-size: 20px;
    padding-left: 20px;
  }
  .img-box {
    height: 250px;
  }
  .about-title {
    font-size: 30px;
  }
  .about-title-sub {
    font-size: 26px;
  }
  .about-content {
    font-size: 18px;
  }
}