* {
    margin: 0px;
    padding: 0px;
}

body {
    background-color: #222;
    color: #fff;
    height: 100%;
    display: block;
}

a {
    text-decoration: none;
    color: #000;
}

.app-main {
}

.app-img {
    padding-top: 100px;
    text-align: center
}

    .app-img img {
        max-width: 200px;
    }

.app-name {
    font-size: 24px;
    font-weight: 900;
    text-align: center;
    margin-top: 50px;
}

.app-button {
    margin: 0 auto;
    padding-top: 10px;
    padding-bottom: 10px;
    width: 150px;
    background: #eee;
    -moz-border-radius: 15px;
    -webkit-border-radius: 15px;
    border-radius: 15px;
    color: #000;
    text-align: center;
    margin-top: 50px;
}

.app-wx {
    position: absolute;
    text-align: center;
    padding-top: 10px;
    padding-bottom: 10px;
    color: #555;
    left: 50%;
    font-size: 14px;
    line-height: 20px;
    width: 300px;
    margin-left: -150px; /*此处的负值是宽度的一半*/
    background: url(/content/images/app_download/ico_wx.png) no-repeat right top;
    background-color: #fff;
}