div.grid {
    margin-top: 3rem;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 3rem;
    width: min-content;
}

div.grid table {
    border: 0;
    border-collapse: separate;
}

div.grid table td {
    border: 0;
    width: 45pt;
    min-width: 45pt;
    min-height: 45pt;
    padding: 0;
}

div.grid table td input {
    width: inherit;
    min-height: inherit;
    height: inherit;
    text-align: center;
    font-size: 2rem;
}

div.letters {
    margin-left: auto;
    margin-right: auto;
    width: min-content;
}

div.letters table {
    border-collapse: separate;
}

div.letters table td {
    margin: 3px;
    text-align: center;
    font-size: 1.5rem;
}

div.nbg-info {
    text-align: center;
    font-size: 0.9rem;
}