.sudoku 
  { 
    background-color:#FFFFFF; color:#000000; font-size:24pt; border-collapse:collapse;
    margin-left:auto; margin-right:auto; 
  }
.sudoku td { width:50px; height:50px; text-align:center; }
.sudoku input { width:40px; text-align:center; font-size:24pt; border:none; background:transparent; }

.sudoku_field_given { background-color:#FFFFCC; }
.sudoku_field:hover { background-color:#E8E8E8; }

.clickNr { position:absolute; width:10px; font-size:6pt; text-align:center; cursor:pointer; }
.sudoku_field .clickNr { display:none; }
.sudoku_field:hover .clickNr { display:inline; }

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#field01 { border-right:1px solid #C0C0C0; border-bottom:1px solid #C0C0C0;}
#field02 { border-right:1px solid black; border-bottom:1px solid #C0C0C0; }
#field03 { border-right:1px solid #C0C0C0; border-left:1px solid black; border-bottom:1px solid #C0C0C0; }
#field04 { border-right:1px solid #C0C0C0; border-bottom:1px solid #C0C0C0; }
#field05 { border-right:1px solid black; border-bottom:1px solid #C0C0C0; }
#field06 { border-right:1px solid #C0C0C0; border-left:1px solid black; border-bottom:1px solid #C0C0C0; }
#field07 { border-right:1px solid #C0C0C0; border-bottom:1px solid #C0C0C0; }
#field08 { border-bottom:1px solid #C0C0C0; }

#field10 { border-right:1px solid #C0C0C0; border-bottom:1px solid #C0C0C0; }
#field11 { border-right:1px solid #C0C0C0; border-bottom:1px solid #C0C0C0;}
#field12 { border-right:1px solid black; border-bottom:1px solid #C0C0C0; }
#field13 { border-right:1px solid #C0C0C0; border-left:1px solid black; border-bottom:1px solid #C0C0C0; }
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#field25 { border-right:1px solid black; border-bottom:1px solid black; }
#field26 { border-right:1px solid #C0C0C0; border-left:1px solid black; border-bottom:1px solid black; }
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#field28 { border-right:1px solid #C0C0C0; border-bottom:1px solid black; }

#field30 { border-right:1px solid #C0C0C0; border-top:1px solid black; border-bottom:1px solid #C0C0C0; }
#field31 { border-right:1px solid #C0C0C0; border-top:1px solid black; border-bottom:1px solid #C0C0C0; }
#field32 { border-right:1px solid black; border-bottom:1px solid #C0C0C0; border-top:1px solid black; }
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