.mask {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: none;
    filter: alpha(opacity=15);
    -moz-opacity: .12;
    -khtml-opacity: .15;
    opacity: .15;
    background-color: #000;
    z-index: 9999;
}

.mask-panel {
    position: fixed;
    top: 40%;
    left: 50%;
    display: none;
    margin-left: -200px;
    margin-top: -220px;
    width: 400px;
    height: 440px;
    padding: 10px;
    background-color: #fff;
    box-shadow: 0 0 5px #525252;
    z-index: 999999;
}

.mask-panel .mask-panel-hd {
    width: 100%;
    height: 40px;
}

.mask-panel .mask-panel-bd {
    width: 400px;
    margin: auto;
    background-color: #efefef;
    height: 400px;
}

.ewm {
    /*    width: 100%;*/
    margin-top: 30px;
    /*   margin-left: 44%;*/
}

.qrcode {
    position: relative;
    width: 200px;
    height: 200px;
    margin: auto;
}

.qrcode .qrcode-img {
    position: absolute;
    width: 40px;
    height: 40px;
    left: 50%;
    top: 50%;
    overflow: hidden;
    margin-left: -20px;
    margin-top: -20px;
    background-color: #fff;
    border-radius: 6px;
}

.qrcode .qrcode-img img {
    width: 80%;
    height: 80%;
    margin: 10%;
}

.menu ul li {
    float: left;
    margin-top: 50px;
    width: auto;
    height: auto;
}

.intro {
    width: 100%;
    margin-top: 20px;
    text-align: center;
}

.introDesc {
    margin-left: 20px;
    margin-right: 20px;
}