* {
  margin: 0;
  padding: 0;

  touch-action: manipulation;
}

html,
body {
  width: 100vw;
  height: 100dvh;

  position: relative;
  overflow: hidden;
}

video {
  position: fixed;
  top: 0;
  left: 50%;

  height: 100dvh;
  object-fit: cover;

  transform: scaleX(-1) translateX(50%);
}

#paperplane-canvas {
  position: fixed;
  top: 0;
  left: 50%;
  transform: scaleX(-1) translateX(50%);

  height: 100dvh;

  z-index: 100;
}

#envelope-canvas {
  position: fixed;
  top: 0;
  left: 50%;
  transform: scaleX(-1) translateX(50%);

  height: 100dvh;

  z-index: 200;
}

#capture-board {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: scaleX(-1) translate(50%, -50%);

  z-index: 500;

  display: none;
}