css怎么设置表格居中

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Center Table with Flexbox</title>
    <style>
        .container {
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh; /* 使容器占满整个视口高度 */
        }
        table {
            border-collapse: collapse;
        }
        th, td {
            border: 1px solid black;
            padding: 8px;
            text-align: left;
        }
    </style>
</head>
<body>
    <div class="container">
        <table>
            <tr>
                <th>Header 1</th>
                <th>Header 2</th>
            </tr>
            <tr>
                <td>Data 1</td>
                <td>Data 2</td>
            </tr>
        </table>
    </div>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Center Table with Grid</title>
    <style>
        .container {
            display: grid;
            place-items: center;
            height: 100vh; /* 使容器占满整个视口高度 */
        }
        table {
            border-collapse: collapse;
        }
        th, td {
            border: 1px solid black;
            padding: 8px;
            text-align: left;
        }
    </style>
</head>
<body>
    <div class="container">
        <table>
            <tr>
                <th>Header 1</th>
                <th>Header 2</th>
            </tr>
            <tr>
                <td>Data 1</td>
                <td>Data 2</td>
            </tr>
        </table>
    </div>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Center Table with Absolute Positioning</title>
    <style>
        .container {
            position: relative;
            height: 100vh; /* 使容器占满整个视口高度 */
        }
        table {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            border-collapse: collapse;
        }
        th, td {
            border: 1px solid black;
            padding: 8px;
            text-align: left;
        }
    </style>
</head>
<body>
    <div class="container">
        <table>
            <tr>
                <th>Header 1</th>
                <th>Header 2</th>
            </tr>
            <tr>
                <td>Data 1</td>
                <td>Data 2</td>
            </tr>
        </table>
    </div>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Center Table with Margin Auto</title>
    <style>
        .container {
            text-align: center;
        }
        table {
            display: inline-table;
            border-collapse: collapse;
            margin-left: auto;
            margin-right: auto;
        }
        th, td {
            border: 1px solid black;
            padding: 8px;
            text-align: left;
        }
    </style>
</head>
<body>
    <div class="container">
        <table>
            <tr>
                <th>Header 1</th>
                <th>Header 2</th>
            </tr>
            <tr>
                <td>Data 1</td>
                <td>Data 2</td>
            </tr>
        </table>
    </div>
</body>
</html>