.bg {
    width: 100%;
    height: 100%;
    background: url('../images/appPic.jpg') no-repeat center center;
    background-size: cover;
    display: flex;
    color: #fff;
    position: relative;
}

.appLogo {
    width: 20em;
    /*margin-bottom: 3em;*/
    margin: 0 auto 3em auto;
}

.itemButton {
    width: 160px;
    height: 48px;
    background-color: #fff;
    color: #222;
    font-size: 12px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    line-height: 16px;
    border-radius: 24px;
}

.itemLogo {
    width: 26px;
    height: 32px;
    margin-right: 0.5em;
}

.itemContain {
    display: flex;
    width: 23em;
    margin-top: 60px;
}

.appFont {
    font-size: 30px;
    line-height: 42px;
}