html, body {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  overscroll-behavior: none;
  background: #e6cfa8;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}
#c {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  touch-action: none;
}