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<!DOCTYPE html> <html> <title>HTML Tutorial</title> <body> <h1>This is a heading</h1> <p>This is a paragraph.</p> </body> </html>
body { background-color: lightblue; } h1 { color: white; text-align: center; }
<button onclick="myFunction()">Click Me!</button> <script> function myFunction() { let x = document.getElementById("demo"); x.style.fontSize = "25px"; x.style.color = "red"; } </script>
<!DOCTYPE html> <html> <body> <?php echo "My first PHP script!"; ?> </body> </html>