@import url('https://fonts.googleapis.com/css?family=Open+Sans');

html, body {
  width: 100%;
  height: 100%;
  padding: 0;
  margin: 0;
}

.center {
  position: absolute;
  left: 50%;
  top: 50%;
  -webkit-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
}

.line {
  fill: none;
  stroke: steelblue;
  stroke-width: 2px;
}

.legend rect {
  fill:white;
  stroke:black;
  opacity:0.8;}