.clearfix{
  zoom: 1;
}
.clearfix:after{
    clear: both;
    content: ' ';
    display: block;
    font-size: 0;
    line-height: 0;
    visibility: hidden;
    width: 0;
    height: 0;
}
.banner{
    min-width: 1200px;
    height: 680px;
    width: 100%;
    background: url(../../images/app/index/banner@1x.png) no-repeat;
    background-position: center 0;
    background-size: cover;
    position: relative;
}
.banner-content{overflow: hidden;}
.banner-side{
  float: left;
  width: 388px;
  color: #fff;
  margin-top: 185px;
}
.banner-side h3{
  font-size: 36px;
  line-height: 48px;
  margin-bottom: 14px;
}
.banner-side p{
  font-size: 24px;
  line-height: 28px;
  margin-bottom: 50px;
}
.download-box{
  float: left;
}
.download-code{
  float: left;
  padding: 15px;
  background: #fff;
  border-radius: 4px;
  margin-right: 16px;
}
.download-code img{float: left;}
.download-btns{
  float: left;
}
.download-btns a{
  display: block;
  font-size: 16px;
  width: 184px;
  height: 46px;
  line-height: 46px;
  text-align: center;
  background: rgba(255,255,255,.4);
  border-radius: 4px;
  color: #fff;
  margin-bottom: 16px;
}
.banner-img{
  margin-top: 100px;
  float: right;
}
.fl{float: left;}
.fr{float: right;}
.app-item{
  padding: 35px 0;
}
.app-side{
  margin-top: 146px;
}
.app-side h3{
  font-size: 28px;
  margin-bottom: 20px;
}
.app-side p{
  font-size: 16px;
  line-height: 28px;
}
.item-forces{
  margin-top: 20px;
}
.item-forces .feature{
  width: 70px;
  text-align: center;
  float: left;
  margin-right: 50px;
}
.item-forces .feature span{
  display: block;
  width: 36px;
  height: 36px;
  margin: 0 auto 12px;
  background-image: url(../../images/app/index/icon@1x.png);
  background-repeat: no-repeat;
}
@media only screen and (-webkit-min-device-pixel-ratio: 2),only screen and (min--moz-device-pixel-ratio: 2),only screen and (-o-min-device-pixel-ratio: 2/1),only screen and (min-device-pixel-ratio: 2) {
  .item-forces .feature span {
    background-image: url(../../images/app/index/icon@2x.png);
    background-size: 324px 36px;
  }
}
.item-forces .feature1{background-position: 0 0;}
.item-forces .feature2{background-position: -36px 0;}
.item-forces .feature3{background-position: -72px 0;}
.item-forces .feature4{background-position: -108px 0;}
.item-forces .feature5{background-position: -144px 0;}
.item-forces .feature6{background-position: -180px 0;}
.item-forces .feature7{background-position: -216px 0;}
.item-forces .feature8{background-position: -252px 0;}
.item-forces .feature9{background-position: -288px 0;}