div.tooltip {
  position: absolute;
  text-align: center;
  padding: 5px;
  font: 12px sans-serif;
  background: black;
  color: white;
  border: 1px;
  border-radius: 4px;
  pointer-events: none;
}



/*#heatmap {*/
  /*background-color: #fff;*/
  /*margin-left: 0px;*/
  /*margin-right: auto;*/
/*}*/

/*rect.bordered {*/
  /*stroke: #E6E6E6;*/
  /*stroke-width:2px;*/
/*}*/

/*text {*/
  /*font-family: helvetica, arial, sans-serif;*/
  /*fill: #444;*/
  /*font-size: 12px;*/
/*}*/

/*.row-hide {*/
  /*display: none;*/
/*}*/

/*.row-show {*/
  /*display: none;*/
/*}*/

/*.d3-tip {*/
  /*line-height: 1.4;*/
  /*font-weight: bold;*/
  /*padding: 12px;*/
  /*background: rgba(0, 0, 0, 0.8);*/
  /*color: #fff;*/
  /*border-radius: 3px;*/
  /*margin-top: -7px;*/
  /*font-family: sans-serif;*/
  /*font-size: 12px;*/
/*}*/

/*!* Creates a small triangle extender for the tooltip *!*/
/*.d3-tip:after {*/
  /*box-sizing: border-box;*/
  /*display: inline;*/
  /*font-size: 10px;*/
  /*width: 100%;*/
  /*line-height: 1;*/
  /*color: rgba(0, 0, 0, 0.8);*/
  /*content: "\25BC";*/
  /*position: absolute;*/
  /*text-align: center;*/
/*}*/

/*!* Style northward tooltips differently *!*/
/*.d3-tip.n:after {*/
  /*margin: -1px 0 0 0;*/
  /*top: 98%;*/
  /*left: 0;*/
/*}*/

/*.light {*/
  /*color: #bbb;*/
/*}*/