body {
    font-family: Arial, sans-serif;
    margin: 0;
    background: #f5f5f5;
}

header {
    background: #111;
    color: white;
    padding: 20px;
}

header h1 {
    margin: 0;
}

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

nav a:hover {
    color: white;
}

main {
    padding: 20px;
}

article {
    background: white;
    padding: 15px;
    margin-bottom: 15px;
    border-radius: 5px;
}

footer {
    text-align: center;
    padding: 15px;
    color: gray;
}