body, html {
    height: 100%;
    margin: 0;
    font-family: Arial, sans-serif;
}

.container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
}

h1 {
    font-size: 2rem;
    text-align: center;
    font-weight: bold;
    padding: 20px;
}

@media (min-width: 768px) {
    h1 {
        font-size: 3rem;
    }
}