body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  background-color: whitesmoke;
}
#chartdiv {
  width: 780px;
  height: 800px;
  margin: 0 auto;
  background-color: white;
}