/* The harness's own layout: the canvas fills the viewport edge to edge,
   and the dark ground stands before the app paints its own. A first-party
   file, not an inline style: the static cell's CSP answers style-src 'self'. */
html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #181818;
}
canvas {
  display: block;
  width: 100%;
  height: 100%;
}