title: Why does `minmax` always use maximum space?
body: <p>As you can see in this simple example, each grid cell always uses the maximum possible amount of space. Why does this happen, and how can I convince the grid to use less space if possible?</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="false" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-css lang-css prettyprint-override"><code>.testgrid {
    display: grid;
    grid-template-columns: 20% minmax(20%, 80%);
    grid-auto-rows: minmax(1.5em, 4.5em);
  }
  
  .testgrid .item {
    background-color: #AF6;
    margin: 1px;
    overflow: hidden;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;div class="testgrid"&gt;
    &lt;div class="item"&gt;Cell 1&lt;/div&gt;
    &lt;div class="item"&gt;Cell 2&lt;/div&gt;
    &lt;div class="item"&gt;Cell 3 (uses too much space, so really it ought to be clipped)&lt;/div&gt;
    &lt;div class="item"&gt;Cell 4&lt;/div&gt;
    &lt;div class="item"&gt;Cell 5&lt;/div&gt;
    &lt;div class="item"&gt;Cell 6 (more text here, could push the column wider)&lt;/div&gt;
  &lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>