.cms-index-index .col-main {
    margin-top:calc(100vh - 80px);
}

.index-banner {
    height: 100vh;
    overflow: hidden;
    margin: 0;
    position: absolute;
    left: 0;
    top: 0;
    z-index: -1;
    right: 0;
    width: 100%;
}

.index-banner ul {
    height: 100vw;
    position: absolute;
    width: 50000px;
}

.index-banner ul li {
    float: left;
    height: 100vh;
    overflow: hidden;
    position: relative;
    background: #000;
    width:100vw;
}

.index-banner ul li img {
    width:100vw;
}

.index-banner ul li div {
    position: absolute;
    overflow: hidden;
    z-index: 999
}

.index-banner .control {
    position: absolute;
    height: 10px;
    padding: 5px 10px;
    bottom: 40px;
    text-align: center;
    z-index: 9999
}

.index-banner .control span {
    float: left;
    _display: inline;
    _zoom: 1;
    _font-size: 0;
    margin-left: 5px;
    cursor: pointer;
    height: 15px;
    width: 15px;
    background: #666;
    border-radius: 15px;
}

.index-banner .control span.active { background: #f00; }

.index-banner li {
    float: left;
    width: auto;
    height: 100vh;
}

.index-banner {
    width: auto;
    height: 100vh;
}

.index-banner-scroll {
    position: relative;
    overflow: hidden;
    width: 100vw;
    height: 100vh;
}

.btn-group {
    text-align: center;
    margin-top: 10px;
}

.btn-group span {
    display: inline-block;
    width: 100px;
    height: 30px;
    line-height: 30px;
    border: 1px solid #ccc;
    border-radius: 5px;
    margin-right: 10px;
    cursor: pointer;
    user-select: none;
}