main {
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    object-fit: scale-down;
}

canvas {
    max-width: 100%;
    max-height: 100%;
    margin: auto;
    overflow: auto;
    position: inherit;
    object-fit: scale-down;
}