:root {
  --hlrng-color: #8f2d56;
  --hlrng-width: 100px;
}

.applet {
  align-items: center;
  background-color: #fffafa;
  border-radius: 5px;
  box-shadow: 1px 1px 2px gray;
  display: flex;
  flex-direction: column;
  margin: 0 auto;
  max-width: 35em;
  gap: 5px;
}

#canvas_div {
  width: 300px;
  height: 300px;
}

canvas {
  touch-action: none;
}

@media screen and (min-width: 640px) {
  #canvas_div {
    width: 500px;
    height: 500px;
  }
}