.d3-tip {
  line-height: 1;
  font-weight: bold;
  padding: 12px;
  background: rgba(0, 0, 0, 0.7);
  color: #fff;
  border-radius: 6px;
  box-Shadow:0px 1px 5px 0px rgba(50,50,50,0.6);
  z-index:20000;
  pointer-events:none;
}
/* 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, 0.7);
  content: "\25BC";
  position: absolute;
  text-align: center;
  z-index:20000;
}

/* Style northward tooltips differently */
.d3-tip.n:after {
  margin: -1px 0 0 0;
  top: 100%;
  left: 0;
}

.tooltip3 {
    float:top;
    position:absolute;
    text-align:center;
    min-width:180px;
    height:80px;
    line-height:15px;
    min-height:20px;
    max-height:80px;
    padding-left:0px;
    font-size:18px;
    font-weight:bold;
    background:rgba(0,0,0,0.7);
    color:#fff;
    border:1px;
    border-radius:10px;
    pointer-events:none;
    z-index:20000;
}
.tooltip4 {
    float:top;
    position:absolute;
    text-align:center;
    min-width:150px;
    height:20px;
    line-height:20px;
    min-height:20px;
    max-height:20px;
    padding-left:0px;
    font:18px 'Microsoft JhengHei',sans-serif;
    font-weight:bold;
    background:none;
    color:#fff;
    border:1px;
    border-radius:10px;
    z-index:20000;
    display:none;
}