div.main table {border-collapse: collapse; border: 4px solid black}
div.main tbody, div.main colgroup {border: 4px solid black}
div.main td {font-size: 16pt; font-family: sans-serif; font-weight: bold; text-align: center; border: 1px solid black}
div.main td input {font-size: 16pt; font-family: sans-serif; text-align: center; border: 0; padding: 0; margin: 0; width: 1.25em}