html, body {
  margin: 0;
  height: 100%;
  background: #000;
  overflow: hidden;
}

body {
  display: grid;
  place-items: center;
}

/* Drawn at the original's pixel size, then scaled (main.js sets --scale). */
#stage {
  position: relative;
  transform: scale(var(--scale, 1));
  image-rendering: pixelated;
}

#stage.smooth {
  image-rendering: auto;
}

#screen {
  display: block;
  width: 100%;
  height: 100%;
  image-rendering: inherit;
  touch-action: manipulation;
}

/* Real inputs over the drawn edit boxes: they take the keys and summon phone
   keyboards, the canvas draws their text in the original font. 16px avoids
   iOS zooming on focus. */
#stage input {
  position: absolute;
  height: 19px;
  box-sizing: border-box;
  margin: 0;
  padding: 0 4px;
  border: 0;
  outline: none;
  background: transparent;
  color: transparent;
  caret-color: transparent;
  font-size: 16px;
}

#stage input::selection {
  background: transparent;
}