.nnav {
        width: 1200px;
    margin: 0 auto;
}

.wrap {
        height: 72px;
            transition: height 0.36s ease;
    width: 100%;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    position: sticky;
}

.nnav ul {
        float: left;
}

.nnav ul li {
        float: left;
}

.nnav ul li a {
   line-height: 70px;
    color: #333;
    display: block;
    margin: 0 50px 0 0;
    border-bottom: solid 2px #fff;
}
.nnav ul li a.cur {
    color: #5e9b26;
    font-weight: bold;
    border-bottom: solid 2px #5e9b26;
}
.wrap .container_target{
    float: right;
    text-align: right;
    line-height: 72px;
    font-size: 14px;
}

hr {
        background-color: #f2f2f2;
}

.content_wrapper .postbody ul li{
        width: 24%;
    display: inline-block;
        padding-bottom: 16px;
}

.content_wrapper .postbody ul li p {
        text-align: center;
    font-size: 15px;
    color: #666;
    margin-top: 10px;
}