body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    color: #333;
    margin: 0;
    padding: 0;
}

header {
    background-color: #4CAF50;
    color: white;
    padding: 15px 0;
    text-align: center;
}

main {
    padding: 20px;
}

h2 {
    color: #4CAF50;
}

footer {
    text-align: center;
    padding: 10px 0;
    background-color: #333;
    color: white;
    position: relative;
    bottom: 0;
    width: 100%;
}