html,
body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  width: 100%;
  height: 100%;
  background: #794841;
  color: white;
}

canvas {
  display: block;
  width: 100vw;
  height: 100vh;
}

#app {
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  z-index: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

section {
  min-width: 320px;
  max-width: 40em;
}

samp {
  background-color: #aaa;
  color: black;
  border-radius: 8px;
  display: block;
  padding: 2rem 1rem;
  white-space: pre-wrap;
}