/* .back-image {
  background-image: url('chb.jpg');
} */

body {
  margin: 0px;
  background-color: black;
}

.container {
    position: absolute;
    width: 100%;
    max-width: 100%;
    height: 100%;
    max-height: 100%;
    background-size: contain;
    background-repeat: no-repeat;
}​

svg {
  position: absolute;
}

circle {
  fill: white;
  stroke: black;
  stroke-width: 2px;
  opacity: 0.3;
}

circle:hover {
  opacity: 1;
}

.labelRect {
  fill: white;
  stroke-width: 1;
  stroke: black;
}