body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #f09, #3023ae);
    color: white;
}

.container {
    padding: 40px;
}

h1 {
    font-size: 2.5rem;
}

.cards {
    display: flex;
    gap: 20px;
}

.card {
    background: rgba(255, 255, 255, 0.2);
    padding: 20px;
    border-radius: 12px;
}

@media (max-width: 768px) {
    .cards {
        flex-direction: column;
    }

    .card {
        flex: 1 1 100%;
    }

    h1 {
        font-size: 2rem;
    }
}