body {
    font-family: sans-serif;
    background: #f5f5f5;
    padding: 20px;
}

#wrapper {
    position: relative;
    display: inline-block;
    border: 1px solid #cccccc;
    background: white;
}

#baseImage {
    display: block;
    pointer-events: none;
    user-select: none;
}

#drawCanvas {
    position: absolute;
    top:0;
    left:0;
    cursor: crosshair;
    touch-action: none;
}

#canvas {
    position:absolute;
    top:0;
    left:0;
}

button {
    margin-top: 10px;
    padding: 6px 12px;
}