body {
    text-align: center;
    margin-top: 100px;
    font-family: Arial;
}

.big {
    font-size: 10rem;
}

.red {
    color: red;
}

.italic {
    font-style: italic;
}

button {
    padding: 10px 20px;
    margin: 10px;
    cursor: pointer;
}