body {
    font-family: Arial, sans-serif;
    margin: 20px;
}

.table-title {
    text-align: center; /* 居中对齐 */
    font-size: 2em; /* 字体大小 */
    margin-bottom: 20px; /* 下方外边距 */
}

table {
    border-collapse: collapse;
    margin-bottom: 20px;
    table-layout: auto; /* 自适应列宽 */
}

th, td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
    white-space: nowrap; /* 避免换行 */
}

th {
    background-color: #f2f2f2;
    cursor: pointer;
    position: relative; /* 为了放置箭头 */
}

th:hover {
    background-color: #ddd;
}

.tablesorter-headerAsc::after {
    content: '▲';
    font-size: 0.6em;
    position: absolute;
    right: 8px;
}

.tablesorter-headerDesc::after {
    content: '▼';
    font-size: 0.6em;
    position: absolute;
    right: 8px;
}