小编Nic*_*ick的帖子

.first {
  height: 50px;
  background-color: red;
}

.second {
  height: 100px;
  background-color: green;
}

.container {
  display: grid;
  grid-template-rows: min-content;
  grid-template-columns: 265px auto;
}

<div class="container">
  <div class="first"></div>
  <div class="second"></div>
</div>