JSFiddle - React, Tailwind, and code Playground

HTML

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

CSS

.container{
  background: #cf0;
  height: 300px;
  width: 300px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.container div{
  flex: 1;
  background: #eff;
  width: 100%;
  margin-bottom: 20px;
}

.container div:last-of-type{
  margin-bottom: 0;
}