html,
body {
    margin: 0;
    padding: 0;
}

canvas {
    display: block;
    margin: 0 auto;
}

.hidden {
    display: none;
}

.disabled {
    opacity: 0.5;
}

#ui-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

#spin-button {
    cursor: pointer;
    transform-origin: bottom right;
    pointer-events: auto;
    width: 128px;
    height: 128px;
    position: absolute;
    right:0;
    bottom: 0;
}