body {
  font-family: sans-serif;
  font-weight: bold;
  background-color: black;
  margin: 0;
  padding: 0;
  position: fixed;
  overflow: hidden;
  height: 100%;
  width: 100%;
  user-select: none;
}

#pane {
  position: absolute;
  visibility: hidden;
  cursor: pointer;
  margin: 0;
  padding: 0;
  z-index: 2;
}

#menu {
  position: absolute;
  visibility: hidden;
  background-color: black;
  border-radius: 5px;
  color: #cccccc;
  -webkit-text-stroke-color: white;
  -webkit-text-stroke-width: thin;
  z-index: 16;
}

#menu a {
  color: white;
}

#sign0 {
  position: absolute;
  background-color: black;
  border-radius: 3px;
  visibility: hidden;
  color: #cccccc;
  text-align: center;
  -webkit-text-stroke-color: white;
  -webkit-text-stroke-width: thin;
  z-index: 14;
}

#tutorial0 {
  position: absolute;
  background-color: black;
  visibility: hidden;
  color: white;
  text-align: center;
  border-radius: 3px;
  z-index: 15;
}

#perf0 {
  position: absolute;
  background-color: black;
  visibility: hidden;
  color: #cccccc;
  z-index: 20;
}