HTML index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>My Page</title>
</head>
<body>
    <h1>Hello World!</h1>
    <button onclick="sayHello()">Click me</button>
</body>
</html>

CSS style.css

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    padding: 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

h1 {
    font-size: 3em;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

button {
    padding: 15px 30px;
    font-size: 1.2em;
    background: white;
    color: #667eea;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    transition: all 0.3s;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

JavaScript script.js

function sayHello() {
    console.log('Hello from JavaScript!');
    console.log('Time:', new Date().toLocaleString());
    alert('Hello World! 🎉');
}

console.log('✅ Script loaded successfully!');
console.log('📝 Click the button to see console output');

HTML Runner