table.result {
    border-spacing: 0px;
    margin: 25px auto;
    border-color: gray;
}

table.outline {
    border: 2px solid black;
}

table.result td {
    border: 1px solid black;
    padding: 5px 10px;
    text-align: center;
}

table.result td.top {
    border-top: 2px solid black;
}

table.result td.right {
    border-right: 2px solid black;
}

table.result td.bottom {
    border-bottom: 2px solid black;
}

table.result td.left {
    border-left: 2px solid black;
}

table.result td.inSquare {
    background-color: darkslategrey;
    color: white;
}

.highlight_diagonal {
    background-color: green;
}

.highlight_medium {
    background-color: salmon;
}

.highlight_first_last {
    background-color: darkgray;
}

.formula {
    text-align: center;
}

.hightlightInText {
    padding: 0 5px;
}