ul,li,h1,h2,h3,h4,h5,h6,b,i{margin:0; padding:0; font-style:normal; font-weight:normal;}
body{
    padding:0;
    margin:0 auto;
    list-style: none;
    font-family: "Arial","Microsoft YaHei";
}


.download img {
    height: 100%;
    display: block;
}

.wxtip {
    background: rgba(0, 0, 0, 0.5);
    text-align: center;
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: 999;
    display: none;
}

.wechattip-icon {
    width: 100%;
    height: 100%;
    background: url('../img/common/wechat_bg.png') no-repeat;
    background-size: 100% 100%;
    display: block;
}

.bottom_img {
    position: fixed;
    bottom: 0;
    max-width:640px;
    z-index: 9999999;
}
.prompt_img {
  width: 100%;
  position: absolute;
  top: 11.5%;
  max-width:640px;
  z-index: 999999;
}

.download {
  position: relative;
  left: 0;
  top: 0;
  height: 100vh;
  display: flex;
  justify-content: center;
}
.box {
  position: relative;
  left: 0;
  top: 0;
}

.kefu {
  position: absolute;
  width: 100px;
  height: 100px;
  top: 0;
  right: 0;
  z-index: 2000;
}

.test_flight_div {
    width: 70%;
    position: absolute;
    top: 22.2%;
    left: 50%;
    margin-left: -35%;
}
.download_img_div{
    width: 70%;
    position: absolute;
    top: 39%;
    left: 50%;
    margin-left: -35%;
}

.download_img{
    width: 42%;
    position: absolute;
    top: 14.5%;
    left: 5%;
    max-width:640px;
    z-index: 999999;
}
.exchange_img{
    width: 42%;
    position: absolute;
    top: 14.5%;
    right: 5%;
    max-width:640px;
    z-index: 999999;
}
.customer_img{
    width: 20%;
    position: absolute;
    top: 0.4%;
    right: 4%;
    max-width:640px;
    z-index: 999999;
}
.download_center{
    width: 42%;
    position: absolute;
    top: 14.5%;
    left: 50%;
    margin-left: -21%;
    max-width:640px;
    z-index: 999999;
}
.download_gtag {
    width: 42%;
    height: 80px;
    position: absolute;
    top: 14%;
    left: 50%;
    margin-left: -21%;
    max-width:640px;
    z-index: 999999;
}