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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"> <h2>Show/Hide Utilities</h2> <p><strong>Note:</strong> Resize the browser window to understand how it works:</p> <div class="w3-container w3-hide-small w3-red"><p>w3-hide-small will be hidden on small screens (phones)</p></div> <div class="w3-container w3-hide-medium w3-green"><p>w3-hide-medium will be hidden on medium screens (tablets)</p></div> <div class="w3-container w3-hide-large w3-blue"><p>w3-hide-large will be hidden on large screens (laptops/desktop)</p></div></div></body></html>