Tailwind CSS class .flex-col

<div class="inline-flex flex-col">
  <div class="bg-teal-400 p-4 m-2">1</div>
  <div class="bg-teal-400 p-4 m-2">2</div>
  <div class="bg-teal-400 p-4 m-2">3</div>
</div>

.flex-col {
    flex-direction: column;
}