*{
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
}
ul,li{
    list-style: none;
}
.content_1920{
    width: 100%;
    overflow: hidden;
}
.content_banner {
    width: 100%;
    position: relative;
    max-width: 1920px;
    margin: auto;
}
.lunbo {
    position: relative;
    width: 100%;
    height: 100%;
    z-index: 1;
}
.lunbo li {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: none;
}
.content_box{
    z-index: 2;
    position: relative;
    zoom: 1;
    overflow: visible;
    margin: 0 auto;
    display: block;
}
.content_pic {
    position: absolute;
    left: 50%;
    top: 0;
    width: 1920px;
    margin-left: -960px;
    overflow: hidden;
    text-align: center;
}
.lunbo_tab {
    position: absolute;
    width: 100%;
    bottom: 2px;
    left: 50%;
    z-index: 3;
    text-align: right;
    margin-left:-25%;
}
.lunbo_tab li {
    width: 20px;
    height: 16px;
    background: #0f1110;
    float: right;
    color: #fff;
    font-size: 12px;
    text-align: center;
    margin-right: 2px;
    line-height: 16px;
}
.lunbo_tab li.on {
    background: #ff0100;
}