html, body {
    margin: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.wxtip {
    background: rgba(0, 0, 0, 0.8);
    text-align: right;
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: 998;
    display: none;
}

.wxtip img {
    width: 80%;
    box-sizing: border-box;
    padding-right: 5%;
}

.match {
    width: 100%;
    height: 100%;
}

.w-match {
    width: 100%;
}

.h-match {
    height: 100%;
}

.introduction {
}

.main {
    position: relative;
    overflow: hidden;
}

.app-name {
    position: absolute;
    top: 20px;
    left: 20px;
    max-width: 40%;
}

.slogan {
    position: absolute;
    top: 50%;
    left: 50%;
    -ms-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    width: 60%;

}

.arrow-down {
    position: absolute;
    bottom: 20px;
    left: 50%;
    -ms-transform: translate(-50%, -10px);
    transform: translate(-50%, -10px);
    width: 30px;
    animation: arrow-jump 2s linear 0s infinite alternate;
    -moz-animation: arrow-jump 2s linear 0s infinite alternate; /* Firefox */
    -webkit-animation: arrow-jump 2s linear 0s infinite alternate; /* Safari 和 Chrome */
    -o-animation: arrow-jump 2s linear 0s infinite alternate;
}

@keyframes arrow-move {
    from {
        transform: rotateX(180deg)
    }
    to {
        transform: rotateX(90deg)
    }
}

@keyframes arrow-jump {
    0% {
        bottom: 20px;
    }
    50% {
        bottom: 15px;
    }
    100% {
        bottom: 20px;
    }
}

.bg-image {
    clear: both;
    margin: auto;
    height: 100%;
    z-index: 10;
    overflow: hidden;
    /*display: block;*/
    display: table-cell;
    vertical-align: middle;
    text-align: center;
    background: black;
}

.download {
    width: calc(100% - 20px);
    padding: 0 10px;

    /*position: relative;*/
    /*z-index: 100;*/
    /*margin-top: -100px;*/
    /*height: 100px;*/
    z-index: 900;
    position: fixed;
    bottom: 4%; /*6%*/
    left: 0;
}

.download-btn {
    display: inline-block;
    width: calc(50% - 30px);
    float: left;
    margin: 10px 15px;
    z-index: 900;
}

.title {
    width: 70%;
    margin: 0 auto;
    display: block;
    padding-top: 30px;
}

.swiper-box {
    width: 100%;
    /*position: relative;*/
}

.swiper-box > img {
    /*display: block;*/
    /*margin: 0 auto;*/
    /*position: absolute;*/
    /*left: 50%;*/
    /*top: 50%;*/
    /*-ms-transform: translate(-50%, -50%);*/
    /*transform: translate(-50%, -50%);*/
    /*z-index: 800;*/
}

.banner-img {
    width: 100%;
    height: 100%;
    z-index: 700;
}