body {
    font-family: Arial, sans-serif;
    margin: 0;
    background-color: #f4f4f4;
}

header {
    background-color: #333;
    color: white;
    padding: 15px;
}

nav a {
    color: white;
    margin-right: 15px;
    text-decoration: none;
}

main {
    padding: 20px;
}

button {
    background-color: #007bff;
    color: white;
    border: none;
    padding: 10px 15px;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}

footer {
    text-align: center;
    padding: 10px;
    background-color: #ddd;
}