.svg-tip {
  padding: 10px;
  background: rgba(0,0,0,0.8);
  color: #bbb;
  font-size: 12px;
  position: absolute;
  z-index: 99999;
  text-align: center;
  border-radius: 3px;
}

.svg-tip:after {
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  position: absolute;
  left: 50%;
  height: 5px;
  width: 5px;
  bottom: -10px;
  margin: 0 0 0 -5px;
  content: " ";
  border: 5px solid transparent;
  border-top-color: rgba(0,0,0,0.8);
}