.head {
    width: 100%;
    height: 3em;
    line-height: 3em;
    margin: auto;
    color: #fff !important;
    padding: 1em 0;
    /* border-bottom: 1px solid #c0c0c0; */
    background: -webkit-linear-gradient(90deg, #E53A22 0%, #EB4A33 48%, #F15C47 85%);
    background: -moz-linear-gradient(90deg, #E53A22 0%, #EB4A33 48%, #F15C47 85%);
    background: -ms-linear-gradient(90deg, #E53A22 0%, #EB4A33 48%, #F15C47 85%);
    overflow: hidden;
}

.head .logo-box {
    display: inline-block;
    float: none;
    height: auto;
    padding: 0 20px;
    font-weight: 700;
    line-height: 3em;
    text-align: center;
}

.head .logo-box .logo {
    max-height: 3em;
    display: inline-block;
}

.head .logo-box .logo-text {
    font-size: 2em;
    margin-left: .2em;
}

.center {
    padding: 6em 0;
    text-align: center;
}

.center .app-icon {
    margin: 0 auto;
    width: 8em;
    height: 8em;
}

.center .app-title {
    text-align: center;
    font-size: 1.6em;
    margin: .5em 0;
}

.center .app-version {
    width: 100%;
    height: 2em;
    margin: .5em 0;
    text-align: center;
}

.center .app-version .icon-android {

    background-color: silver;
}

.center .app-version .app-version-text {
    font-size: 1.4em;
}

.center .app-download {
    width: 100%;
    margin-top: 4em;
}

.center .app-download .app-submit {
    width: 20em;
    display: block;
    margin: auto;
    height: 3em;
    line-height: 3em;
    font-size: 1.8em;
    text-align: center;
    color: #fff;
    border-radius: .5em;
    background-color: #F15C47;
    border: 1px solid #F15C47;
    cursor: pointer;
    border-bottom: 5px solid #d2513c
}
.center .app-download .app-submit a{
    width: 100%;
    height: 100%;
    color: #fff!important;
}

.center .app-download .app-submit-text {
    font-size: 1.8em;
    text-align: center;
}

.foot {
    position: fixed;
    bottom: 0;
    width: 100%;
    padding: 1em 0;
    background-color: #F15C47;
    clear: both;
    font-size: 0.8em;
    margin-top: 1.5em;
    min-height: 1em;
}

.foot p {
    text-align: center;
    color: #fff;
    font-size: 1.6em;
}