body {
  margin: 0;
  overflow: hidden;
  text-align: center;
  font-family: verdana, sans-serif;
}

#toggle-button {
  z-index: 2;
  position: absolute;
  top: 0;
  left: 0;
}

// Displays something full-screen
@mixin full-screen {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

// Styles for the "Open" page
canvas {
  @include full-screen;
  background: #000;
}

// Styles for the "closed" frame.
@keyframes fadeOut {
  0% {
    opacity: 1;
  }

  100% {
    opacity: 0;
  }
}

body.closed {
  background: #f66;

  .closed_notice {
    position: absolute;
    font-weight: bold;
    font-size: 16pt;
    text-transform: uppercase;
    animation: fadeOut 3s forwards;
    animation-timing-function: linear;
    animation-iteration-count: 1;
  }

  #stop-overlay {
    @include full-screen;
    z-index: 1;
    background-size: contain;
    background-repeat: no-repeat;
    // File is served from a subdirectory.
    background-image: url(../stop.svg);
    background-position: 50% 50%;
  }
}