html,
body {
  background-color: black;
  position: fixed;
  overflow: hidden;
  padding: 0;
  margin: 0;
  width: 100vw;
  height: 100vh;
  overscroll-behavior-y: none;
  overscroll-behavior-x: none;
  touch-action: none;

  @media not all and (min-resolution: 0.001dpcm) {
    @supports (-webkit-appearance: none) and (stroke-color: transparent) and
      (-webkit-touch-callout: none) {
      width: -webkit-fill-available;
      height: -webkit-fill-available;
    }
  }
}

button {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  border: none;
  border-radius: 0;
}