main #game table {
    margin: 1em auto;
    border-spacing: 0.3em;
    border-collapse: separate;
}

main #game td {
    border: 2px solid var(--bs-dark-bg-subtle);
    text-transform: uppercase;
    --size: 3em;
    width: var(--size);
    height: var(--size);
    text-align: center;
    font-size: 1.4em;
    font-weight: bold;
}

#game canvas {
    border: 1px solid lightgray;
    border-radius: 5px;
    box-shadow: 2px 2px 2px 1px var(--bs-tertiary-color);
}

#board {
    display: flex;
    justify-content: center;
}

main #game td:last-child {
    border: none;
}

#game td:not(:empty) {
    border-color: var(--bs-secondary-color);
}

#keyboard {
    text-align: center;
}

#keyboard div {
    margin-bottom: 0.5em;
}

#keyboard div button {
    margin: 2px;
    font-size: 20px;
    width: 32px;
    padding: 5px;
}

#keyboard div button[data-value="Enter"],
#keyboard div button[data-value="Backspace"] {
    width: 72px;
}

@media (max-width: 400px) {
    main #game td {
        font-size: 0.9em;
    }

    #keyboard div button {
        margin: 0;
        width: 40px;
        height: 40px;
        padding: 0;
        font-size: 1rem;
    }

    #keyboard div button[data-value="Enter"],
    #keyboard div button[data-value="Backspace"] {
        width: 85px;
    }
}