.main_content {
    width: 1004px;
    margin: 0 auto 0px;
    position: relative;
    zoom: 1;
}

.nf_hp_kv {
    margin: 0 -500px;
    position: relative;
    width: 2000px;
}

.window {
    height: 370px;
    overflow: hidden;
    position: relative;
    width: 2000px;
}

.kv_item {
    height: 370px;
    overflow: hidden;
    padding: 0 500px;
    position: absolute;
    width: 1004px;
}

.js_nav {
    left: 0;
    height: 6px;
    text-align: center;
    width: 100%;
    position: absolute;
    bottom: 30px;
}

.js_nav ul {
    margin: 0 auto;
    width: 940px;
    text-align: center;
}

.js_nav li {
    height: 4px;
    width: 50px;
    margin: 12px;
    display: inline-block;
    display: inline;
    zoom: 1;
}

.js_nav li a {
    display: inline;
    float: left;
    height: 4px;
    overflow: hidden;
    width: 100%;
    font-size: 0;
    background: #363636;
}

.js_nav li.active a,
.js_nav li a:hover {
    background: #da0c0c
}

.btn_prev {
    left: 0;
}

.btn_next {
    right: 0;
}

.btn_prev,
.btn_next {
    display: none;
}