.banner {
    margin-bottom: 50px;
    min-width: 1400px;
    display: flex;
    justify-content: center;
    overflow: hidden;
}

.banner a {
    display: block;
}

.banner a img {
    margin: 0 auto;
    display: block;
    max-width: 1920px;
}

.main .layout .content .introduction {
    padding-top: 37px;
    display: flex;
    align-items: center;

}

.main .layout .content .introduction .left {
    flex-shrink: 0;
    margin-right: 42px;
}

.main .layout .content .introduction .left .title {
    margin-bottom: 8px;
    font-family: SourceHanSansCN, SourceHanSansCN;
    font-weight: bold;
    font-size: 20px;
    color: #271F89;
}

.main .layout .content .introduction .left .time {
    font-family: SourceHanSansCN, SourceHanSansCN;
    font-weight: 400;
    font-size: 14px;
    color: #999999;
}

.main .layout .content .introduction .right p {
    width: 983px;
    font-family: SourceHanSansCN, SourceHanSansCN;
    font-weight: 400;
    font-size: 16px;
    color: #333333;
    line-height: 28px;
    text-align: justify;
    text-indent: 2em;
}

.main .layout .content ul {
    margin-top: 43px;
}

.main .layout .content ul li {
    float: left;
    margin-right: 20px;
    margin-top: 35px;
}

.main .layout .content ul li:nth-child(3n) {
    margin-right: 0;
}

.main .layout .content ul li:nth-child(1),
.main .layout .content ul li:nth-child(2),
.main .layout .content ul li:nth-child(3) {
    margin-top: 0;
}

.main .layout .content ul li a {
    display: block;
}

.main .layout .content ul li a .imgbox {
    margin-bottom: 20px;
    width: 378px;
    height: 209px;
}

.main .layout .content ul li a .imgbox img {
    display: block;
    width: 100%;
    height: 100%;
}

.main .layout .content ul li a .title {
    width: 378px;
    font-family: SourceHanSansCN, SourceHanSansCN;
    font-weight: 500;
    font-size: 18px;
    color: #333333;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    word-break: break-all;
}

.main .layout .content ul li:hover a .title{
    color: #271F89;
}