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<!DOCTYPE html> <html> <title>W3.JS</title> <script src="https://www.w3schools.com/lib/w3.js"></script> <body> <p>Click the button to hide the first p element inside div.</p> <button onclick="w3.hide('div p:first-child')">Hide</button> <div> <p>First paragraph.</p> <p>Second paragraph.</p> </div> </body> </html>
