#banner {
    width: 100%;
    height: 80vh;
    background: #000;
    overflow: hidden;
    position: relative
}

#banner .wrapper {
    width: 986px;
    margin: 0 auto;
    position: relative
}

#banner_img {
    display: block;
    position: relative
}

#banner_img li {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 80vh;
    background-position: center;
    background-size: cover;
    display: none
}

#banner_img li.item1 {
    background-image: url(../images/banner_bg1.jpg);
    display: block
}

#banner_img li.item2 {
    background-image: url(../images/banner_bg2.jpg)
}

#banner_img li.item3 {
    background-image: url(../images/banner_bg3.jpg)
}

#banner_img li.item4 {
    background-image: url(../images/banner_bg4.jpg)
}

#banner_img li.item5 {
    background-image: url(../images/banner_bg5.jpg)
}

#banner_img li.item6 {
    background-image: url(../images/banner_bg6.jpg)
}

#banner_img li.item7 {
    background-image: url(../images/banner_bg7.jpg)
}

#banner_img li.item8 {
    background-image: url(../images/banner_bg8.jpg)
}

#banner_img .ad_img {
    position: absolute;
    right: 10px;
    top: 80px;
    width: 506px;
    height: 404px
}

#banner_img .ad_txt {
    position: absolute;
    left: 10px;
    top: 170px;
    color: #fff;
    text-shadow: 1px 1px rgba(51, 51, 51, .3)
}

#banner_img .ad_txt h2 {
    font: bold 36px/60px Microsoft YaHei
}

#banner_img .ad_txt a {
    display: block;
    width: 100px;
    height: 25px;
    line-height: 25px;
    text-align: center;
    margin-top: 10px;
    background: #fff;
    color: #666;
    text-decoration: none;
    text-shadow: none
}

#banner_ctr {
    position: absolute;
    width: 960px;
    height: 122px;
    margin-left: -480px;
    left: 50%;
    bottom: 40px;
    z-index: 1
}

#banner_ctr ul {
    width: 960px;
    height: 122px;
    font-size: 0;
    line-height: 0;
    position: relative
}

#banner_ctr li {
    display: block;
    font: 18px Helvetica Neue, Helvetica, PingFang SC, Tahoma, Arial, sans-serif;
    float: left;
    width: 25%;
    height: 50px;
    line-height: 50px;
    background: #fff;
    text-align: center;
    cursor: pointer
}

#banner_ctr li.first-item {
    background: #fff;
    width: 20px;
    -webkit-border-radius: 20px 0 0 20px;
    -moz-border-radius: 20px 0 0 20px;
    border-radius: 20px 0 0 20px;
    cursor: default
}

#banner_ctr li.last-item {
    background: #fff;
    width: 20px;
    -webkit-border-radius: 0 20px 20px 0;
    -moz-border-radius: 0 20px 20px 0;
    border-radius: 0 20px 20px 0;
    cursor: default
}

#drag_ctr {
    position: absolute;
    top: -14px;
    left: 20px;
    width: 115px;
    height: 156px;
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    border-radius: 5px;
    bottom: 170px;
    background: #0084cf
}

#drag_arrow {
    position: absolute;
    top: -14px;
    left: 20px;
    width: 115px;
    height: 156px;
    background: url(../images/drag_banner_arrow.png) center 14px no-repeat
}