Untitled

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
       td,th{
            border: 1px solid black;

        }
        table{
            border-collapse: collapse;
            margin: 0 auto;
        }
        .up{
            border-top: none;
        }
        .bottom{
            border-bottom: none;
        }
        .twoside{
            border-bottom: none;
            border-right: none;
        }
        .container{
            width: 500px;
            text-align: center;
        }

    </style>
</head>
<body>
    <div class="container">
        <h3>TP</h3>
        <h4>Table Practice</h4>
        <table>
            <tr>
                <th>Na</th>
                <th class="up">ac</th>
                <th>age</th>
            </tr>
            <tr>
                <td>ja</td>
                <td>12</td>
                <td>13</td>
            </tr>
            <tr>
                <td>sa</td>
                <td class="bottom">00</td>
                <td colspan="2" rowspan="2">00</td>
            </tr>
            <tr>
                <td>aa</td>
                <td class="up">34</td>
            </tr>
            <tr>
                <td colspan="2"></td>
                <td class="twoside">3241</td>
            </tr>
        </table>
    </div>
</body>
</html>