.container table {
    width: 80%;                /* 表格宽度 */
    margin: 20px auto;         /* 居中 */
    border-collapse: collapse; /* 合并边框 */
    border-radius: 12px;       /* 圆角 */
    overflow: hidden;          /* 确保圆角生效 */
    box-shadow: 0 4px 12px rgba(0,0,0,0.1); /* 阴影 */
}

.container td {
    border: 1px solid #ddd;
    padding: 10px 15px;
    text-align: center;
}

.container tr:nth-child(even) {
    background-color: #f9f9f9; /* 斑马条纹 */
}

.container tr:first-child td:first-child {
    border-top-left-radius: 12px; /* 左上角圆角 */
}
.container tr:first-child td:last-child {
    border-top-right-radius: 12px; /* 右上角圆角 */
}
.container tr:last-child td:first-child {
    border-bottom-left-radius: 12px; /* 左下角圆角 */
}
.container tr:last-child td:last-child {
    border-bottom-right-radius: 12px; /* 右下角圆角 */
}