body {
    /* background: linear-gradient(125deg, red, green, blue); */
    /* width: 100vw;
    height: 100vh; */
    overflow: hidden;
}

canvas {
    position: absolute;
    top: 0;
    left: 0;
    background: linear-gradient(125deg, red, green, blue);
    /* width: 100%;
    height: 100%; */
}

#collisionCanvas {
    opacity: 0;
}