.tooltip-grey {
  position: relative;
  display: inline-block;
}

.tooltip-grey .tooltiptext {
  visibility: hidden;
  width: 300px;
  background-color: white;
  color: grey;
  text-align: center;
  border-radius: 6px;
  padding: 5px 0;
  position: absolute;
  z-index: 1;
  bottom: 115%;
  left: 50%;
  margin-left: -150px;
  font-size: 14px;
  border: 2px solid #cccccc;
  border-color: #cccccc;
}

.tooltip-grey .tooltiptext::before {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border: 10px solid transparent;
  border-top-color: #cccccc;
}

.tooltip-grey .tooltiptext::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border: 6px solid transparent;
  border-top-color: white;
}

.tooltip-grey:hover .tooltiptext {
  visibility: visible;
}