<table border="1">
    <tr><th>言語</th><td>Python</td><td>JavaScript</td><td>PHP</td></tr>
    <tr><th>用途例</th><td>機械学習</td><td>フロントエンド</td><td>サーバーサイド</td></tr>
    <tr><th>人気</th><td>1位</td><td>2位</td><td>3位</td></tr>
</table>
th{
  border:double 5px red;
}

td{
  border:dashed 5px #008DBD;
}

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