.bigbox {
    display: block;
    margin:auto;
    background: #f1f1f1;
    border: 1px solid #cccccc;
    font-size: 46px;
    text-align: center;
    padding: 20px;
}

.smallbox {
    display: block;
    margin:auto;
    background: #f1f1f1;
    border: 1px solid #cccccc;
    font-size: 28px;
    text-align: center;
    padding: 20px;
}