body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    background-color: #f4f4f9;
    color: #333;
    box-sizing: border-box;
}

.main-container {
    text-align: center;
    padding: 2rem 3rem;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 600px;
    margin: 2rem 1rem;
}

@media (max-width: 600px) {
    body {
        align-items: flex-start;
    }

    .main-container {
        padding: 1.5rem 1rem;
        margin: 0;
        box-shadow: none;
        border-radius: 0;
        min-height: 100vh;
    }

    h1 {
        font-size: 1.8rem;
    }
}