.tooltip {
  position: relative;
  cursor: default;
}
.tooltip-tip {
  position: absolute;
  top: -3px;
  left: 0;
  right: 0;
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.3s ease, visibility 0.3s 0s;
  -webkit-transition: opacity 0.3s ease, visibility 0.3s 0s;
}
.tooltip:hover .tooltip-tip {
  visibility: visible;
  opacity: 1;
  transition-delay: 0s;
  -webkit-transition-delay: 0s;
}
.tooltip-arrow {
  position: absolute;
  bottom: 0;
  left: -5px;
  margin-left: 50%;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 5px solid #000;
}
.tooltip-content {
  position: absolute;
  bottom: 5px;
  left: -100px;
  margin-left: 50%;
  width: 200px;
  text-align: center;
}
.tooltip-inner {
  background: #000;
  color: #fff;
  padding: 10px 15px;
  display: inline-block;
  font-size: 14px;
  font-weight: normal;
  line-height: 1.1;
}