body { font-family: Arial, sans-serif; background: #f4f4f4; text-align: center; margin-top: 100px; }
input { padding: 8px; margin: 5px; width: 200px; }
button { padding: 8px 15px; }
p { color: red; }
a { color: #0066cc; }
div.navbar {
    background: #333;
    color: #fff;
    padding: 10px;
}
div.navbar a {
    color: #fff;
    margin-right: 15px;
    text-decoration: none;
}
div.navbar a:hover {
    text-decoration: underline;
}