body {
  background-color: black;
  width: 100vw;
  height: 100vh;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  /* leave it to hide the scrollbars */
  overflow: hidden;
}

.debugger {
  display: none;
  font-family: monospace;
  font-weight: bold;
  font-size: 14px;
  color: grey;
  background: rgba(0, 0, 0, 0.5);
  position: absolute;
  top: 0;
  left: 0;
  margin: 30px;
  padding: 20px;
}

.density-bar {
  margin-top: 8px;
  height: 12px;
  width: 60px;
  background: rgba(255, 255, 255, 0.1);
}

.density-bar > div{
  height: 12px;
  width: 0;
  background: rgb(34, 34, 155);
}