:host {
  display: -webkit-flex;
  display: -ms-flex;
  display: flex;
  margin: 0;
  padding: 0;
  width: 400px;
  height: 300px;
}

:host([type="gauge"]) {
  width: 300px;
  height: 300px;
}

#chartdiv {
  width: 100%;
}