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

h2, h1 {
    text-align: center;
}

.login-form, .dashboard, .products {
    max-width: 500px;
    margin: 50px auto;
    padding: 20px;
    background: white;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}