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HTML

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CSS

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CSS Base

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JavaScript

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Babel includes JSX processing.

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HTML 

              
                <!-- responsive-table -->
<table class="responsive-table">
  <tr>
    <th>Header001(th)</th>
    <td>Data 1</td>
    <td>Data 2</td>
  </tr>
  <tr>
    <th>Header002(th)</th>
    <td>Data 1</td>
    <td>Data 2</td>
  </tr>
  <tr>
    <th>Header003(th)</th>
    <td>Data 1</td>
    <td>Data 2</td>
  </tr>
  <tr>
    <th>Header004(th)</th>
    <td>Data 1</td>
    <td>Data 2</td>
  </tr>
</table>
!

CSS 

              
                /* 通常サイズのブラウザに適用する基本的なテーブルのスタイル */
table{
  border-collapse: collapse; /* セルの境界線を重ね合わせるため、ボーダーを重ねる */
  width: 100%; /* テーブルの幅を100%に設定 */
}

.responsive-table th,
.responsive-table td{
  padding: 15px; /* セル内のコンテンツとセルの境界線の間に余白を設ける */
  border: solid 1px #ccc; /* セルの境界線のスタイルを設定 */
  text-align:center; /* セル内のテキストを中央揃えに設定 */
  box-sizing:border-box; /* ボックスのサイズをコンテンツボックスに設定 */
}

.responsive-table th {
  width:30%;
  background: #333; /* 背景色を設定 */
  color: #fff; /* テキスト色 */
}

/* ブラウザサイズが600px以下になったときのスタイル */
@media screen and (max-width: 600px) {
  .responsive-table {
    width: 100%; /* テーブルの幅を100%に設定 */
  }
  
.responsive-table th,
.responsive-table td {
    display: block; /* ブロック要素として表示 */
    width: 100%; /* 幅を100%に設定 */
    border-bottom:none; /* セルの下部の境界線を削除 */
  }
  
  .responsive-table tr:last-child{
    border-bottom: solid 1px #ccc; /* 最後の行の下部に境界線を追加 */
  }
}
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JS
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999px

Console