#sudoku-table {
    margin: 0 auto;
    padding: 0;
    border-collapse: collapse;
    table-layout: fixed;
    border: 5px solid #FFFFFF;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
}

#sudoku-table td {
    padding: 0;
    overflow: hidden;
    border: 2px solid #FFFFFF;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
    text-align: center;
    color: #DDDDDD;
    vertical-align: middle;
}

#sudoku-table td strong {
    font-weight: bold;
    color: #FFFFFF;
}

#sudoku-table td.selected {
    background-color: #999999;
}

#sudoku-table td.fixed {
    color: #FFFFFF;
    font-weight: bold;
}

#sudoku-table td:nth-child(3), #sudoku-table td:nth-child(6) {
    border-right: 5px solid #FFFFFF;
}

#sudoku-table tr:nth-child(3), #sudoku-table tr:nth-child(6) {
    border-bottom: 5px solid #FFFFFF;
}

#sudoku-keyboard {
    position: absolute;
    left: 85%;
    top: 50%;
    margin-top: -105px;
    margin-left: -105px;
    width: 210px;
    height: 210px;
    border: none;
    border-collapse: collapse;
    padding: 0;
    display: none;
}

#sudoku-keyboard td {
    border: 2px solid #AAAAAA;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    font-size: 40pt;
    font-family: Arial, Helvetica, sans-serif;
    font-weight: bold;
    color: #FFFFFF;
}

#sudoku-keyboard td.disabled {
    color: #AAAAAA;
}

#sudoku-erase {
    width: 120px;
    height: 120px;
    position: absolute;
    left: 15%;
    top: 50%;
    margin-top: -60px;
    margin-left: -60px;
    background-image: url(../img/delete.png);
    background-repeat: no-repeat;
    background-position: center center;
    background-size: auto 120px;
    display: none;
}

#sudoku-win {
    width: 600px;
    height: 200px;
    position: absolute;
    left: 198px;
    top: 148px;
    background-color: #000000;
    color: #FFFFFF;
    border-radius: 10px;
    line-height: 200px;
    text-align: center;
    font-family: Arial, Helvetica, sans-serif;
    font-weight: bold;
    font-size: 50pt;
    display: none;
}