div.otazka { font-family: Verdana, Arial, sans-serif; width: 700px; background: #fff; padding: 1em; border: 1px solid}
.otazka table {border: 2px outset; border-collapse: collapse}
td, th {padding: 0.2em; border: 1px inset}
th { background: #ddd }
td.cislo {text-align: right}
td.prep {border-right: solid 2px black}
.ucet th {border-bottom: 2px solid black}
.ucet td {height: 1.2em}