.main_prev {
    background: #ffffff;
    padding: 50px;
    margin-top: 15px;
}

.jieshao {
    overflow: hidden;
}

.jieshao>a:first-child {
    float: left;
    margin-right: 50px;
}

.jieshao>a:first-child img {
    width: 350px;
}

.jieshao h1 {
    margin: 20px 0 30px;
    font-size: 26px;
    color: #333333;
}

.jieshao p {
    font-size: 14px;
    margin-top: 25px;
    color: #333333;
}

.jieshao p span {
    margin-right: 40px;
    display: inline-block;
    padding-left: 25px;
    height: 20px;
    background: url("../img/time.png") no-repeat left center;
}

.jieshao p span.see {
    background-image: url("../img/liulan.png");
}

.jieshao a.ljxz {
    display: inline-block;
    width: 170px;
    height: 55px;
    margin-top: 65px;
    font-size: 14px;
    text-align: center;
    line-height: 55px;
    color: #ffffff;
    background: #000;
}

.main_prev_box {
    margin-top: 50px;
    padding-top: 50px;
    padding-bottom: 40px;
    border-bottom: 1px solid #d8d8d8;
    border-top: 1px solid #d8d8d8;
}

.main_prev_box p {
    color: #666666;
    font-size: 14px;
    line-height: 20px;
}

.main_prev_box span {
    color: #666666;
    font-size: 14px;
    line-height: 20px;
}

.prev_next_article {}

.prev_next_article p {
    line-height: 50px;
    font-size: 14px;
    color: #333333;
}

.prev_next_article p a {
    color: #333333;
}

.prev_next_article p a:hover {
    text-decoration: underline;
}

.prev_next_article p a.none_ar {
    color: #bbb;
}

.main {
    background: #ffffff;
    padding: 50px;
    margin-top: 15px;
}

.main>h3 {
    font-size: 26px;
    color: #333333;
}

.main>p {
    height: 55px;
    line-height: 55px;
    font-size: 14px;
}

.main>p>span {
    float: right;
    color: #333333;
    margin-right: 30px;
}

.main>p>select {
    float: right;
    display: inline-block;
    width: 170px;
    height: 55px;
    border: 1px solid #333333;
    padding-left: 20px;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background: url("../img/black_xiajiantou.png") no-repeat right 30px center;
}

.main>p>select#fenlei {
    margin-right: 25px;
}

.main_box {
    overflow: hidden;
    margin-top: 50px;
    margin-bottom: 50px;
}

.main_box>li {
    float: left;
    width: 350px;
    height: 420px;
    margin-right: 20px;
}

.main_box>li:nth-child(3n) {
    margin-right: 0;
}

.main_box>li a img {
    width: 350px;
}

.main_box>li h3 a {
    font-size: 20px;
    color: #333333;
}

.main_box>li p {
    font-size: 14px;
}

.main_box_bottom {
    border: 1px solid #d8d8d8;
    padding: 20px 20px 0;
}

.main_box_bottom>p {
    margin-top: 10px;
}

.main_box_bottom>div {
    border-top: 1px solid #d8d8d8;
    margin-top: 20px;
    height: 40px;
    line-height: 40px;
}

.main_box_bottom>div .time {
    float: left;
}

.main_box_bottom>div .see {
    float: right;
}