body {
    display: flex;
    justify-content: center;
}

#container {
    background-color: #BBB;
    display: inline-grid;
    grid-template-columns: auto auto auto auto auto auto auto auto;
    grid-template-rows: auto auto auto auto auto auto auto auto;
    gap: 0px;
    border: 3px solid black;
}

canvas {
    background-color: #BBB;
    margin: 0.5px;
    border-radius: 0px;
}