html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  overflow: hidden;
}

canvas {
  border-style: none;
  border-width: 1px;
  margin: 0;
  padding: 0;
  display: block;
  position: absolute;
  z-index: 1;
}
#topbar {
  background-color: white;
  width: fit-content;
  padding: 3px;
  position: relative;
  z-index: 2;
}