title: Element UI Table - Add Percentage as Width
body: <p>We can add width to an element ui table column as such:</p>
  
  <pre><code>&lt;el-table-column
    prop="city"
    label="City"
    width="120"&gt;
  &lt;/el-table-column&gt;
  </code></pre>
  
  <p>However, it only produces a pixel value.</p>
  
  <p>Is there any solution how to make it use a percentage value?</p>