JSFiddle - React, Tailwind, and code Playground

HTML

<div class="main">
  <div class="child">
    <div class="box">1</div>
    <div class="box">2</div>
    <div class="box">3</div>
  </div>
</div>

SCSS

.main {
  width: 250px;
}

.box {
  width: 100%;
  display: flex;
  align-items: flex-end;
}