.main-nav {
    width: 100%;
    height: 70px;
    border-bottom: 1px solid #dcdcdc;
    text-align: center;
    margin-bottom: 10px;
}

.main-nav a {
    font-size: 16px;
    line-height: 68px;
    display: inline-block;
    color: #3c3c3c;
}

.main-nav a.active {
    border-bottom: 2px solid #3c3c3c;
}

.main .main-body {

    margin-bottom: 48px;
}

.main .main-item {
    display: block;
    float: left;
    color: #3c3c3c;
    width: 32%;
    height: 212px;
    box-sizing: border-box;
    padding-bottom: 40px;
    margin-top: 38px;
    transition: all .3s ease;
    margin-right: 2%;
    background-color: #fff;
    border-radius: 4px;
    padding: 20px 15px;
}

.main .main-item:nth-of-type(3n+3) {
    margin-right: 0%;
}

.main .main-item:hover {
    box-shadow: 1px 1px 15px #ccc;
}

.main .main-item:hover .item-txt h3 {
    color: #298e8d;
}

.main .main-item:hover .item-txt .p2 {
    color: #298e8d;
}

.main .main-item:hover .item-txt .p3 {
    color: #298e8d;
}

.main .main-item:hover .item-txt .p4 {
    color: #298e8d;
}

.main .item-img {
    width: 370px;
    height: 210px;
    float: left;
    border-radius: 6px;
}

.main .item-txt {
    width: 100%;
    float: left;
}

.main .item-txt h3 {
    font-size: 16px;
    font-weight: 700;
    line-height: 50px;
    color: #000;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    white-space: normal;
    overflow: hidden;
}

.main .item-txt .p1 {
    text-align: justify;
    font-size: 14px;
    color: #999999;
    line-height: 1.8;
    height: 73px;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    white-space: normal;
    overflow: hidden;
}

.main .item-txt .p2 {
    letter-spacing: 0;
    text-align: right;
    font-size: 14px;
    color: #666666;
    margin-top: 28px;
}

.main .item-time {
    margin-top: 28px;
    background-color: #fff;
    border-radius: 6px;
}

.main .item-txt .item-time p {
    line-height: 1;
    color: #999999;
    text-align: center;
}

.main .item-txt .item-time .p3 {
    float: right;
    font-size: 14px;
}

.main .item-txt .item-time .p3::before {
    content: "-";
}

.main .item-txt .item-time .p4 {
    float: left;
    font-size: 14px;
}