body {
   background-image: url("http://backgroundimages.eu/albums/background/papyrus-old-stationery.jpg");
   background-size: cover;    
}

.stroke {
  fill: none;
  stroke: #000;
  stroke-width: 3px;
}

.fill {
  fill: #fff;
}

.graticule {
  fill: none;
  stroke: #777;
  stroke-width: .5px;
  stroke-opacity: .5;
}

.land {
  fill: #222;
}

.boundary {
  fill: none;
  stroke: #fff;
  stroke-width: .5px;
}
.tooltip {
    position: absolute;
    line-height: 1;
    font-weight: bold;
    padding: 12px;
    background-image: url("http://backgroundimages.eu/albums/background/papyrus-old-stationery.jpg");
    border-right: 10px;
    top:100px;
    color: #000;
    border-radius: 4px;
    width: 125px;/*tooltip width
  
}