*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #000;
  font-family: 'Courier New', Courier, monospace;
  color: #e8e8e8;
}

:root {
  --app-width: min(100vw, calc(100vh * 16 / 9));
  --app-height: min(100vh, calc(100vw * 9 / 16));
  --scale: calc(var(--app-width) / 1280);
}

button {
  cursor: pointer;
  font-family: inherit;
}

button:disabled {
  cursor: default;
}