如何将宽度 100% 应用于可滚动的表格主体

Question

我正在尝试实现表体可滚动。我能够成功做到这一点，但现在我面临宽度 100% 的问题

请检查这个jsfiddle https://jsfiddle.net/Ratan_Paul/stpgd6x6/

<table>
<thead style="display:block;">
  <tr>
    <th>Company</th>
    <th>Contact</th>
    <th>Country</th>
  </tr>
 </thead>
 <tbody style="max-height: 50px;display: block;overflow-y:auto;">
  <tr>
    <td>Alfreds Futterkiste</td>
    <td>Maria Anders</td>
    <td>Germany</td>
  </tr>
  <tr>
    <td>Centro comercial Moctezuma</td>
    <td>Francisco Chang</td>
    <td>Mexico</td>
  </tr>
  <tr>
    <td>Ernst Handel</td>
    <td>Roland Mendel</td>
    <td>Austria</td>
  </tr>
  <tr>
    <td>Island Trading</td>
    <td>Helen Bennett</td>
    <td>UK</td>
  </tr>
  <tr>
    <td>Laughing Bacchus Winecellars</td>
    <td>Yoshi Tannamuri</td>
    <td>Canada</td>
  </tr>
  <tr>
    <td>Magazzini Alimentari Riuniti</td>
    <td>Giovanni Rovelli</td>
    <td>Italy</td>
  </tr>
  </tbody>
</table>

我不能将宽度应用于 thead 和 tbody 吗？任何解决方案，以便我可以使用滚动并将宽度设置为 100%

Answer 1

有一个更简单的 CSS 解决方案。不用担心元素的宽度和滚动，而是用容器 div 包装表格并使用元素position: sticky的样式th。下面的示例片段 -

.table-container {
  max-height: 160px;
  border: 1px solid red;
  overflow: auto;
}

th {
  position: sticky;
  top: 0;
  background: white;
}

td, th {
  padding: 4px 8px;
}

<div class="table-container">
  <table>
    <thead>
      <tr>
        <th>Company</th>
        <th>Contact</th>
        <th>Country</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td>Alfreds Futterkiste</td>
        <td>Maria Anders</td>
        <td>Germany</td>
      </tr>
      <tr>
        <td>Centro comercial Moctezuma</td>
        <td>Francisco Chang</td>
        <td>Mexico</td>
      </tr>
      <tr>
        <td>Ernst Handel</td>
        <td>Roland Mendel</td>
        <td>Austria</td>
      </tr>
      <tr>
        <td>Island Trading</td>
        <td>Helen Bennett</td>
        <td>UK</td>
      </tr>
      <tr>
        <td>Laughing Bacchus Winecellars</td>
        <td>Yoshi Tannamuri</td>
        <td>Canada</td>
      </tr>
      <tr>
        <td>Magazzini Alimentari Riuniti</td>
        <td>Giovanni Rovelli</td>
        <td>Italy</td>
      </tr>
    </tbody>
  </table>
</div>