*[data-tooltip] {
  box-sizing: border-box;
  position: relative;
  padding : 0;
  margin : 0;
}
*[data-tooltip]::before,
*[data-tooltip]::after {
  box-sizing: inherit;
  position: absolute;
  display: none;
  opacity: 1;
}
*[data-tooltip]::before {
  content: attr(data-tooltip);
  background-color : rgba(100,100,100,0.9);
  color: #fff;
  font-size: 9px;
  padding: 5px;
  border-radius: 5px;
  text-decoration: none;
}
*[data-tooltip]::after {
  width: 0;
  height: 0;
  border: 6px solid transparent;
  content: '';
}

*[data-tooltip]:hover::before,
*[data-tooltip]:hover::after {
	/*  white-space: nowrap; */
  display: block;
  width : 200px;
  height : auto;
}

/** positioning **/

/* left tooltip */
*[data-tooltip][data-placement="left"]::before {
  top: 0;
  right: 100%;
  margin-right: 10px;
}
*[data-tooltip][data-placement="left"]::after {
  border-left-color: rgba(100,100,100,0.9);
  border-right: none;
  top: 50%;
  right: 100%;
  margin-top: -25%;
  margin-right: -190px;
}

/* right tooltip */
*[data-tooltip][data-placement="right"]::before {
  top: -25%;
  left: 100%;
  margin-left: 10px;
}
*[data-tooltip][data-placement="right"]::after {
  border-right-color: rgba(100,100,100,0.9);
  border-left: none;
  top: 50%;
  left: 100%;
  margin-top: -6px;
  margin-left: 4px;
}

/* top tooltip */
*[data-tooltip][data-placement="top"]::before {
  bottom: 100%;
  left: 0;
  margin-bottom: 10px;
}
*[data-tooltip][data-placement="top"]::after {
  border-top-color: rgba(100,100,100,0.9);
  border-bottom: none;
  bottom: 100%;
  left: 10px;
  margin-bottom: 4px;
}

/* bottom tooltip */
*[data-tooltip][data-placement="bottom"]::before {
  top: 100%;
  left: 0;
  margin-top: 10px;
}
*[data-tooltip][data-placement="bottom"]::after {
  border-bottom-color: rgba(100,100,100,0.9);
  border-top: none;
  top: 100%;
  left: 10px;
  margin-top: 4px;
}