html {
  text-align: center;
  margin: 0;
  height: 100vh;
  width: 100vw;
  background-color: navajowhite;
}

#tooltip{
  display: none;
  height: 100px;
  width: 100px;
  opacity: 0.8;
  border-radius: 5px;
  padding: 10px;
  position: fixed;
  z-index: 10;
}

#chart {
  text-align: center;
}