body {
    font-family: Arial;
    font-size: 15px;
    margin-left: 5px;
    width: 600px;
}

canvas {
    border: 1px solid black;
    user-select: none;
    margin-left: auto;
    margin-right: auto;
}

table {
    border-collapse: collapse;
    margin-bottom: 10px;
}

.values td {
    width: 30px;
    height: 30px;
}

td {
    text-align: center;
}

td.active {
    background-color: #ddddff
}

td.inSum {
    font-weight: bold;
    background-color: #ffffdd;
}

td.active.inSum {
    background-color: #ddffdd;
}

input {
    font-size: 15px;
}