body {
    min-width: 980px;
    width: 100%;
    background: #000;
}

._wrap {
    width: 100%;
    height: 680px;
    min-width: 980px;
    position: relative;
    overflow: hidden;
    background: url(../images/pc-bg.jpg) no-repeat 50% 0;
}

._wrap .btn-window-close {width:62px;height:62px;left:50%;margin-left:390px;top:60px;z-index:999;background: url(../images/btn-window-close.png) no-repeat 50% 50%;}
        
._wrap .main {
    width: 1000px;
    height: 1000px;
    position: absolute;
    top: 0;
    left: 50%;
    margin-left: -500px;
}

._wrap .main .logo {width:170px;height:62px;left:50%;margin-left:-590px;top: 45px;z-index:999;background: url(../images/logo.png) no-repeat 50% 50%;}
   
._wrap .main .qrcode {
    width: 262px;
    height: 262px;
    top: 283px;
    left: 50%;
    margin-left: -133px;
    background-color: #000;
}
._wrap .main .qrcode canvas {width: 262px;height:262px;}

.pageTop,.copyRight {display: none;}
.large {padding-top: 40px;}
.large .pageTop {display: block;}
.large .btn-window-close {display: none;}
.large ._wrap {min-width: 1200px;height: 1080px;background-position: 50% 0;}
.large .copyRight {display: block;}