body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background-color: #cfe8ff;
    margin: 0;
}

h1, h2, h3, h4 {
    text-align: center;
}

.subtext {
    margin-top: 10px;
    font-size: 0.9rem;
    color: #555;
    opacity: 0.85;
    line-height: 1.4;
}