html, body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  font-family: Arial, sans-serif;
  width: 100%;
  height: 100%;
}
.gauge-container {
  width: 100%;
  height: 100%;
  text-align: center;
  overflow: hidden;
  position: relative;
}
.gauge-container svg {
  width: 100%;
  height: 100%;
  display: block;
}