body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  height: 100vh;
  width: 100vw;
}
canvas {
  display: block;
  width: 100vw;
  height: 100vh;
  background: var(--color-bg);
  position: absolute;
  top: 0;
  left: 0;
}
button {
  font-family: inherit;
  cursor: pointer;
}
.film-button {
  width: var(--film-button-width);
  height: var(--film-button-height);
  border-radius: var(--film-button-radius);
  background: var(--color-film-inactive);
  border: none;
  color: var(--color-bg);
  font-size: 11px;
  font-weight: bold;
  text-align: center;
  transition: background-color var(--transition-duration) ease;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.film-button.active {
  background: var(--color-film-active);
  color: var(--color-bg);
}