.hint-tooltip2:after{
  content: "";
  background-image: url("../images/QMark_yellow.svg");
  background-repeat: no-repeat;
  background-size: contain;
  width: 12px;
  background-position: center center;
  height: 12px;
  display: inline-block;
  margin-left: 1px;
  position: relative;
}

.bs-tooltip-top .tooltip-inner {
  background-color: #999999;
  font-size: 10px;
  font-weight: lighter;
}