JSFiddle - React, Tailwind, and code Playground

HTML

<div>
  <ul>
    <li>
      1
    </li>
    <li>
      2
    </li>
    <li>
      3
    </li>
    <li>
      4
    </li>
    <li>
      5
    </li>
    <li>
      6
    </li>
    <li>
      7
    </li>
    <li>
      8
    </li>
    <li>
      9
    </li>
    <li>
      10
    </li>
    <li>
      11
    </li>    
    
  </ul>
</div>

CSS

div {
  border: 1px solid red;
  height: 100px;
  width: 300px;
}

ul {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  height: inherit;
  margin: 0;
}