body {
  background: #F3F3F3;
  margin: 0;
  padding: 0;
  border-top: 3px solid #0071e5;
  font-family: "HelveticaNeue-Light", "Helvetica Neue Light", "Helvetica Neue", Helvetica, Arial, "Lucida Grande", sans-serif; 
  font-weight: 200;
}

.content {
  margin: 20px;
}

.visualization {
  display: inline-block;
}

canvas {
  cursor: crosshair;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
}

canvas:active {
  cursor: move;
}