div.layers
{
  position: absolute;
  left: 0;
  top: 0;
}

div.layers > canvas
{
  position: absolute;
}

canvas.layer0
{
  background: green;
  z-index: 0;
}

canvas.layer1
{
  opacity: 1;
  z-index: 1;
}

canvas.layer2
{
  opacity: 1;
  z-index: 2;
}

canvas.layer3
{
  opacity: 1;
  z-index: 3;
}

div.info
{
  position: absolute;
  left: 12px;
  top: 100%;
}

img.cards
{
  display: none;
}

a.rules
{
  font-size: 2em;
}

textarea.dump
{
  display: none;
}

button.copy
{
  display: none;
}