* {
    font-family: "Microsoft YaHei", "Wenquanyi Micro Hei", "WenQuanYi Zen Hei", "ST Heiti", SimHei, "WenQuanYi Zen Hei Sharp", sans-serif;
    box-sizing: border-box;
    padding: 0;
    margin: 0;
}

html, body {
    width: 750px;
    height: 100%;
    line-height: 1.5;
}

.block {
    display: block;
}

.none {
    display: none !important;
}

.relative {
    position: relative;
}

.absolute {
    position: absolute;
}

#page, .page, .page-bg {
    height: 100%;
}

.page {
    width: 750px;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: top;
    opacity: 0;
    display: none;
    /* overflow: scroll;
    -webkit-overflow-scrolling: touch; */
}

.page img, .page video {
    width: 100%;
    font-size: 0;
    display: block;
}

input, button, select, textarea {
    outline: none;
    -webkit-appearance: none;
    border: none;
    background: none;
    border-radius: 0;
}

.text-center {
    text-align: center;
}
.logo-left {
    left: 30px;
    top: 30px;
}

.logo-right {
    right: 30px;
    top: 30px;
}