body {
  font: normal normal 90% sans-serif;
}
canvas {
  z-index: -1;
  background: rgba(245,245,245,0.8);
}
#container {
  position: absolute;
  width: 100%; height: 100%;
}
#comment {
  width: 150px;
  height: 150px;
  padding: 0.5em;
}
