Webmastertoolbag Tryit Editor

<!DOCTYPE html>
<html>
<title>W3.CSS</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="/w3css/5/w3.css">
<body>

<div class="w3-padding">
  <h2>Three Equal Columns</h2>
  <p>Three equal-width columns (33.3%/33.3%/33.3%) on all screen sizes:</p>
</div>

<div class="w3-row w3-padding">
  <p>Inside a container:</p>
  <div class="w3-col s4 w3-green w3-center">
    <p>s4</p>
  </div>
  <div class="w3-col s4 w3-dark-grey w3-center">
    <p>s4</p>
  </div>
  <div class="w3-col s4 w3-red w3-center">
    <p>s4</p>
  </div>
</div>