.news-list-left {
    float: right ;
}

.nav-box {
    position: fixed;
    max-width: 30%;
    margin: 0;
}

.nave-left .title {
    font-size: 24px;
    margin: 10px 0;
}

.article-box {
    margin: 0 auto;
    margin-top: 50px;
    max-width: 75%;
    padding-left: 25%;
    font-size: 17px;
}

.nave-left .title {
    font-size: 24px;
    margin: 10px 0;
}

.nave-left > p {
    margin-bottom: 10px;
    /* color: #ed4e4f; */
    font-size: 16px;
    cursor: pointer;
}

.actives {
    color: #007bff ;
}

#myIframe {
    height: calc(100% - 50px); /* 50px为固定高度 */
}


iframe {
    border: none;
}

@media (max-width: 768px) {
    .nav-box  {
        position: relative;
        max-width: 100%;
    }
    .article-box {
        max-width: 100%;
        padding-left: 0%;
    }
}