body {
    margin: 0;
    background: black;
    overflow: hidden;
}

canvas {
    display: block;
    margin: 0;
    width: 100vw;
    height: 100vh;
    cursor: grab;
}

canvas:active {
    cursor: grabbing;
}

.button-group {
    position: fixed;
    bottom: 1rem;
    right: 1rem;
    display: flex;
    flex-direction: column;
    color: white;
}

input,
label {
    cursor: pointer;
}

@media only screen and (min-width: 480px) {
    .button-group {
        left: 1rem;
        right: unset;
    }
}