<html><title>W3.CSS</title><meta name="viewport" content="width=device-width, initial-scale=1"><link rel="stylesheet" href="https://www.w3schools.cn/w3css/4/w3.css"><body><div class="w3-container"> <h2>Deep Purple Color</h2> <div class="w3-container w3-deep-purple"> <p>Deep Purple container</p> </div> <p class="w3-deep-purple">Deep Purple paragraph</p> <button class="w3-btn w3-deep-purple">Deep Purple Button</button></div></body></html>