@charset "utf-8";
* {
    box-sizing: border-box;
}

body, html {
    height: 100%;
    overflow: hidden;
    overflow-y: scroll;
    /*background: linear-gradient(to right bottom, #00d789, #00bfb0);*/
    /*background: linear-gradient(to right bottom, #ef4136,#7fb80e);*/
    background: linear-gradient(to right bottom, #28a6e7,#77cbf5);
}

body {
    /*display: flex;*/
    top:10%;
    justify-content: center;
    align-items: center;
}

.logo {
    display: block;
    width: 225px;
    margin: 0 auto;
}

.center {
    text-align: center;
    max-width: 540px;
}

.download {
    padding: 30px 0 50px 0;
}

.download a {
    display: block;
    width: 171px;
    height: 43px;
    background: #fff url(../img/download-android.png) no-repeat center;
    background-size: 123px auto;
    border-radius: 999px;
    margin: 10px auto;
}

.download a.android {
    background-image: url(../img/download-android.png);
}

.download a.ios {
    background-image: url(../img/download-ios.png);
}

.bottom-img {
    width: 90%;
    margin: auto;
    position: relative;
}

.bottom-img .bg, .bottom-img .view {
    width: 100%;
}

.bottom-img .view {
    position: absolute;
    z-index: 1;
    left: 0;
    top: 0;
    animation: viewAni 1s linear infinite alternate;
}

@keyframes viewAni {
    100% {
        top: 10px;
    }
}

.open-tips {
    position: fixed;
    z-index: 9;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    background: rgba(0, 0, 0, .8);
    overflow: hidden;
    display: none;
}

.open-tips img {
    width: 300px;
    float: right;
    margin-right: 20px;
}