.hero-image {
    width: 100%;
    height: 200px;
    /* 根据需要调整 */
    background-image: url('img/图书馆2.jpg');
    background-size: cover;
    background-position: center;
}

.main-box1 {
    width: 1500px;

}

.main-content-L-t {
    width: 300px;
}


#his {
    width: 300px;
    display: column;
    align-items: center;
    margin-bottom: 10px;
    background-color: #5e9fca;

}

#his0 {
    display: flex;
}

#his000 {
    width: 300px;
}

#his img {
    width: 50px;
    /* 图标大小 */
    height: auto;
    margin-right: 10px;
}

#his h2 {
    margin: 0;
}

.his-link {
    text-decoration: none;
}

table {
    width: 300px;
    border-collapse: collapse;
}

table,
th,
td {
    border: 1px solid #ddd;
}

th,
td {
    padding: 8px;
    text-align: center;
}

.main-nav {
    border-bottom: 1px solid #ccc;
    padding-bottom: 5px;
    margin-bottom: 10px;
}

.titles,
.wenzi {
    border: 1px solid #ccc;
    padding: 10px;
    margin-bottom: 10px;
}