body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    color: #333;
    margin: 0;
    padding: 0;
}

nav {
    background-color: #2c3e50;
    padding: 10px 0;
    text-align: center;
}

nav a {
    color: #ecf0f1;
    text-decoration: none;
    margin: 0 15px;
    font-weight: bold;
    font-size: 16px;
}

nav a:hover {
    text-decoration: underline;
}

.container {
    max-width: 800px;
    margin: 40px auto;
    padding: 20px;
    background-color: white;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    border-radius: 4px;
}

h1 {
    margin-top: 0;
    font-size: 28px;
}