html, body {
    width: 100%;
    height: auto;
    margin: 0;
    border: 0;
    padding: 0;
}

.head {
    position: fixed;
    display: block;
    z-index: 5;
    top: 0;
    left: 0;
    width: 100%;
    height: 23.47vw;
    background: rgb(236, 79, 63);
}

.back-wrap {
    position: absolute;
    display: block;
    bottom: 0;
    left: 0;
    width: 13.33vw;
    height: 13.33vw;
    -webkit-tap-highlight-color: transparent;
}

.back {
    position: absolute;
    display: block;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;
    width: 5.33vw;
    height: 5.33vw;
}

.back-white {
    background: url("../images/common/back-white.png");
    background-size: 100% 100%;
}

.back-black {
    background: url("../images/common/back-black.png");
    background-size: 100% 100%;
}

.share-wrap {
    position: absolute;
    display: block;
    bottom: 0;
    right: 0;
    width: 13.33vw;
    height: 13.33vw;
    -webkit-tap-highlight-color: transparent;
}

.share {
    position: absolute;
    display: block;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;
    width: 5.33vw;
    height: 5.33vw;
}

.share-white {
    background: url("../images/common/share-white.png");
    background-size: 100% 100%;
}

.share-black {
    background: url("../images/common/share-black.png");
    background-size: 100% 100%;
}

.head-title {
    position: absolute;
    display: block;
    bottom: 2.67vw;
    left: 0;
    right: 0;
    margin: auto;
    width: calc(100% - 32vw);
    height: 8vw;
    line-height: 8vw;
    text-align: center;
    font-size: 4.27vw;
    font-weight: bolder;
    color: #fff;
}

.main {
    position: relative;
    display: block;
    /* margin-top: 23.47vw; */
    width: 100%;
    height: auto;
    /* margin-bottom: 78px; */
}

.cover {
    position: fixed;
    display: none;
    z-index: 10;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #000;
    opacity: .5;
    overflow: hidden;
}

.modal-open {
    position: fixed;
    width: 100%;
}