JSFiddle - React, Tailwind, and code Playground

HTML

<div class="line">
  <div class="year">a
  </div>
</div>

<div class="line">
  <div class="year">a
  </div>
</div>

<div class="line">
  <div class="year">a
  </div>
</div>

CSS

.line {
  border: 1px solid red;
  background-color: black;
  display: inline-block;
  width: 100%;
}

.year {
  float: left;
  background-color: red;
  width: 50px;
  height: 40px;
}