JSFiddle - React, Tailwind, and code Playground

HTML

<main>

  <div>text</div>
  <div>text</div>
  <div>text</div>

</main>

CSS

* {
  box-sizing: border-box
}

html,
body {
  height: 100%;
  padding: 0;
  margin: 0;
}

main {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  height: 300px;
  background: #eee;
}
div {
  height: 50px;
  border: 1px solid red;
}
div {
  margin-top: auto;
}