* {
  box-sizing: border-box;
}
body {
  background: #404040;
  overflow: hidden;
  padding: 0;
  margin: 0;
}
h1 {
  position: fixed;
  right: 2rem;
  bottom: 2rem;
  font-family: sans-serif;
  color: #262626;
  margin: 0;
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
}
canvas.air-horn {
  height: 100vh;
  width: 100vw;
}