h2 {
    color: #000000;
    font: bold 28px Arial, sans-serif;
    text-align: center;
    font-weight: bold;
    background-color: #e0e0e0;
    width: 100%;
    padding: 20px;
}

table {
    width: 80%;
    position: relative;
    left: 10%;
    border-collapse: collapse;
}
th, td {
    border: 1px solid #b0b0b0;
    padding: 8px;
    text-align: left;
}
th {
    background-color: #f8f8f8;
    font-weight: bold;
}

.background-image {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://imgapi.cn/bing.php');
    background-size: cover;
    background-position: center;
    z-index: -1;
}

.thumbnails {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    margin-top: 20px;
}
.thumbnails img {
    cursor: pointer;
    margin: 10px;
    transition: transform 0.3s ease-in-out;
}
.thumbnail {
    width: 10%;
    object-fit: cover;
    cursor: pointer;
    transition: transform 0.3s ease-in-out;
}
.thumbnails img:hover {
    transform: scale(1.1);
}

.gallery_table {
    width: 80%;
    border-collapse: collapse;
    vertical-align: text-bottom;
    table-layout: fixed;
    padding: 0; 
    position: absolute;
    left: 10%;
    bottom: 10%;
    margin: 0 auto;
}
.gallery_table th, .gallery_table td {
    background-color: transparent;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.4);
}

.modal-content {
    margin: 15% auto;
    background-color: #fefefe;
    border: 1px solid #888;
    width: 60%;
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2),0 6px 20px 0 rgba(0,0,0,0.19);
    padding: 20px;
    text-align: center;
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

.close:hover,
.close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

.fullscreen-image {
    /* max-width: 100%; */
    max-width: 60vw; /* 限制图片最大宽度 */
    height: auto;
    max-height: 60vh; /* 限制图片最大高度 */
    margin: 0 auto; /* 居中 */
}