body {
    font-family: "Helvetica", sans-serif;
}

td {
    width: 20px !important;
    height: 20px !important;
    text-align: center;
    color: black;
    border: 1px solid black;
    font-weight: bold;
}

.bomb {
    background-color: red;
}

.covered {
    background-color: darkgray;
}

.uncovered {
    background-color: lightgray;
}

.text-blue { color: blue; }
.text-green { color: green; }
.text-red { color: red; }
.text-purple { color: purple; }
.text-maroon { color: maroon; }
.text-turquoise { color: turquoise; }
.text-black { color: black; }
.text-gray { color: gray; }