•<html><title>W3.CSS</title><meta name="viewport" content="width=device-width, initial-scale=1"><link rel="stylesheet" href="lib/w3.css"><body><div class="w3-cell-row" style="width:75%"> <div class="w3-container w3-red w3-cell"> <p>Hello W3.CSS Layout.</p> </div> <div class="w3-container w3-green w3-cell"> <p>Hello W3.CSS Layout.</p> </div></div></body></html>