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<!DOCTYPE html> <html> <title>W3.CSS</title> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="/lib/w3.css"> <body> <form class="w3-container"> <h2>Input Form</h2> <br> <input class="w3-input" type="text" required> <label class="w3-label">Name</label> <br> <input class="w3-input" type="text" required> <label class="w3-label">Email</label> <br> <textarea class="w3-input"></textarea> <label class="w3-label">Subject</label> </form> </body> </html>