body {
  font-family: tahoma,verdana,arial;
  font-size: 13px;
  margin: 0;
  padding: 0
}
body > div {
  margin-left: 4px;
  margin-right: 4px;
}
body > div > div {
  margin: 0;
  border: 1px solid #ccc;
  border-top: 0;
  padding: 4px;
}
h1 {
  margin: 0 0 0.5em 0;
  padding:  4px 5em 4px 4px;
  font: bold large sans-serif;
  background-color: #c9d7f1;
}
h4 {
  font-size: 14px;
  margin: 0.5em 0 0 0;
  border: 0;
  border-bottom: solid 1px #c9d7f1;
  padding: 2px;
  background-color: #e5ecf9;
}
#canvasParent {
  margin-top: 0;
  margin-bottom: 1em;
  padding: 0;
  border: 0
}
#voronoiCode {
  font: 11px monospace;
  overflow: auto;
  color: #666;
}
#voronoiCode span {
  color: green;
  font-weight: bold;
}