body {
    font-family: system-ui, sans-serif;
    margin: 0;
    padding: 2rem;
    background: #111;
    color: #eee;
    text-align: center;
}

h1, h2 {
    margin: 0.5rem 0;
}

canvas {
    border: 1px solid #444;
    margin: 0.5rem 0;
    cursor: crosshair;
    image-rendering: pixelated;
}

button {
    margin-top: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 1rem;
    cursor: pointer;
}

.hidden {
    display: none;
}

#params {
    font-family: monospace;
    margin: 0.5rem 0;
}