如何使CSS网格最后一行占用剩余空间[重复]

html, body {
  height: 100%;
}

.fill-height {
  height: 100%;
  display: flex;
  flex-direction: column;
}

.fill-height > div {
  border: 1px solid red;
  min-height:2em;
  flex-shrink: 1;
}

.fill-height > div:last-child {
  flex-grow: 1;
}

<section class="fill-height">
  <div>
    row 1 (shrink)
  </div>
  <div>
    row 2 (shrink)
  </div>
  <div>
    row 3 (grow)
  </div>
</section>