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<html><title>W3.CSS</title><meta name="viewport" content="width=device-width, initial-scale=1"><link rel="stylesheet" href="https://www.w3schools.com/w3css/5/w3.css"><body><div class="w3-container"> <h1>The <strong>w3-display-hover</strong> Class</h1> <div class="w3-display-container w3-hover-opacity" style="width:50%"> <img src="img_avatar3.png" alt="Avatar" style="width:100%"> <div class="w3-display-middle w3-display-hover w3-xlarge"> <button class="w3-button w3-black">John Doe</button> </div> </div></div></body></html>