:root {
  --bg: #101010;
  --fg: #fff;
  --cell-w: 9px;   /* horizontal step between characters */
  --cell-h: 12px;  /* vertical step (line-height) */
  --font-size: 13px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: 'JetBrains Mono', ui-monospace, Menlo, Consolas, monospace;
  overflow: hidden;
}
body {
  display: grid;
  place-items: center;
  cursor: pointer;
}
#ascii {
  font-size: var(--font-size);
  line-height: var(--cell-h);
  letter-spacing: 0;
  white-space: pre;
  font-weight: 500;
  user-select: none;
  /* Hidden until the grid is sized to avoid a flash of empty text */
  visibility: hidden;
}
#ascii.ready { visibility: visible; }