JSFiddle - React, Tailwind, and code Playground

by Stefan Zamfira

HTML

<ul>
  <li><span>1</span></li>
  <li><span>2</span></li>
  <li><span>3</span></li>
  <li><span>4</span></li>
  <li><span>5</span></li>
  <li><span>6</span></li>
  <li><span>7</span></li>
  <li><span>8</span></li>
  <li><span>9</span></li>
  <li><span>10</span></li>
  <li><span>11</span></li>
  <li><span>12</span></li>
</ul>

CSS

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

li {
  text-align: center;
  width: 20px;
  margin: 10px;
  background: red;
}

ul li:nth-child(4n) {
  background: blue;
}