html - 列周围的样式表

Question

我正在尝试设计一张 table ，让它最终像图片一样。我需要围绕最后两列来获得这种效果。但是我在 Google 或 Stack 上找不到任何东西。这甚至可以用 HTML/CSS 实现吗？或者我是否需要使用 CSS 创建一个叠加层并将其放置在最后两列上？

<table class="promo-table">
  <th>Product</th>
  <th>Modellen</th>
  <th>Referentie</th>
  <th>TariefPrijs 2018</th>
  <th class="promo">Promoprijs</th>

  <tr class="first-promo">
    <td>Set remblokken, vooras</td>
    <td>117, 176, 246</td>
    <td>A 000 420 29 02</td>
    <td>€75,81</td>
    <td class="promo">€38,70</td>
  </tr>

  <tr>
    <td>Set remblokken, vooras</td>
    <td>117, 176, 246</td>
    <td>A 000 420 29 02</td>
    <td>€75,81</td>
    <td class="promo">€38,70</td>
  </tr>

  <tr>
    <td>Set remblokken, vooras</td>
    <td>117, 176, 246</td>
    <td>A 000 420 29 02</td>
    <td>€75,81</td>
    <td class="promo">€38,70</td>
  </tr>

</table>

Answer 1

一种方法是通过为相应的单元格设置边框来模拟该框。可以使用更大的顶部边框和伪元素 ::before 创建标题。

此方法仅适用于在表格上设置 border-collapse: collapse; 的情况，否则单元格的边框之间会出现间隙。

优点是框的大小直接与表格的内容成比例。如果将该框创建为叠加层，那么当表格内容或列宽发生变化时就会出现问题。

table {
  border-collapse: collapse;
}

th,
td {
  padding: 5px 10px;
  margin: 0;
}

table tr td:nth-child(4),
table tr th:nth-child(4) {
  border-left: 2px solid #17a4e4;
}

table tr td:nth-child(5),
table tr th:nth-child(5) {
  border-right: 2px solid #17a4e4;
}

table tr th {
  position: relative;
  border-top: 25px solid transparent;
}

table tr th:nth-child(4),
table tr th:nth-child(5) {
  border-top: 30px solid #17a4e4;
}

table tr:last-child td:nth-child(4),
table tr:last-child td:nth-child(5) {
  border-bottom: 2px solid #17a4e4;
}

table tr th:nth-child(4)::before {
  content: "Aanbieding";
  text-transform: uppercase;
  color: white;
  position: absolute;
  top: -23px;
  left: 50%;
}

<table class="promo-table">
  <tr>
    <th>Product</th>
    <th>Modellen</th>
    <th>Referentie</th>
    <th>TariefPrijs 2018</th>
    <th class="promo">Promoprijs</th>
  </tr>
  <tr class="first-promo">
    <td>Set remblokken, vooras</td>
    <td>117, 176, 246</td>
    <td>A 000 420 29 02</td>
    <td>€75,81</td>
    <td class="promo">€38,70</td>
  </tr>
  <tr>
    <td>Set remblokken, vooras</td>
    <td>117, 176, 246</td>
    <td>A 000 420 29 02</td>
    <td>€75,81</td>
    <td class="promo">€38,70</td>
  </tr>
  <tr>
    <td>Set remblokken, vooras</td>
    <td>117, 176, 246</td>
    <td>A 000 420 29 02</td>
    <td>€75,81</td>
    <td class="promo">€38,70</td>
  </tr>
</table>