*{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;margin:0;padding:0;}
body,html{position:relative;display:-webkit-box;overflow:hidden;height:100%;min-width:8.53333rem;-webkit-touch-callout:none;-webkit-box-orient:vertical;-webkit-box-align:stretch;}
img{display: block;width: 100%;}

section{position:relative;margin:0 auto;width: 10rem; height:100%;overflow-y:auto;-webkit-overflow-scrolling:touch;background: rebeccapurple; }
.machine{width: 8.77333rem;height: 11.52rem;background: url("../img/machine_bg.png");background-size: cover;position: absolute;top: 50%;left: 50%;-webkit-transform: translate(-50%, -50%);transform: translate(-50%, -50%);}
.rotate_box{width: 60%;margin: 0 auto;padding-top: 37%;}
.rotate_box dd{width: 32%; height: 3.46667rem;margin-right: 2%;float: left;background: url("../img/prize.png");background-size: cover;}
.rotate_box dd:last-child{margin-right: 0;}
.rotate_btn{width: 0.58667rem;height: 1.78667rem;overflow: hidden;position: absolute;right: 0.32rem;bottom: 6rem; transform-origin: center bottom;}
.btn_box{width: 5.92rem;position: absolute;left: 50%;margin-left: -2.96rem;bottom: 2.61333rem;}
.poiner{width: 0.88rem;position: absolute;right: -0.37333rem;top: 1.06667rem;}
.btn_box{width: 5.92rem;position: absolute;left: 50%;margin-left: -2.96rem;bottom: 2.61333rem;}

.mask{width: 100%;height: 100%;background: rgba(0,0,0,0.5);position: fixed;left: 0;top: 0;display: none;}
.mask img{width: 267px;position: absolute;top: 50%;left: 50%;-webkit-transform: translate(-50%, -50%);transform: translate(-50%, -50%);}

@keyframes pointMove
{
    0% {top:0;}
    70%{top:1.3rem}
    100% {top:0;}
}

@-moz-keyframes pointMove /* Firefox */
{
    0% {top:0;}
    70%{top:1.3rem}
    100% {top:0;}
}

@-webkit-keyframes pointMove /* Safari 和 Chrome */
{
    0% {top:0;}
    70%{top:1.3rem}
    100% {top:0;}
}

@-o-keyframes pointMove /* Opera */
{
    0% {top:0;}
    70%{top:1.3rem}
    100% {top:0;}
}



.poiner
{
    animation:pointMove 2s infinite;
    -webkit-animation:pointMove 2s infinite; /* Safari 和 Chrome */
}