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

.nav {
    background: #333;
    padding: 10px;
}

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

.content {
    padding: 20px;
}

form {
    margin-bottom: 20px;
}

input, button {
    padding: 8px;
    margin: 5px 0;
}