body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  background-color: #000000;
  overflow: hidden;
  margin: 0;
  font-size: 0.9em;
}

#chartdiv {
  width: 100%;
  height: 100vh;
  background-color: #121212;
}