[data-clew] {
  position: relative;
}
[data-clew]:after {
  position: absolute;
  transform: translateX(-50%);
  display: none;
  font-size: 13px;
  border-radius: 4px;
  content: attr(data-clew);
  padding: 10px;
  background-color: #fff;
  box-shadow: 0 0 14px rgba(0, 0, 0, 0.1);
  border: 1px solid #ddd;
  color: #777;
  width: 200px;
  line-height: 1.25rem;
  text-align: left;
}
[data-clew].clew-animation:after {
  display: block;
  opacity: 0;
  visibility: hidden;
  transition: all .3s;
}
[data-clew].clew-animation:hover {
  overflow: visible;
}
[data-clew].clew-animation:hover:after {
  opacity: 1;
  visibility: visible;
}
[data-clew]:hover:after {
  display: block;
}
[data-clew].clew-top:after {
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
}
[data-clew].clew-top:hover:after {
  transform: translateX(-50%) translateY(-8px);
}
[data-clew].clew-bottom:after {
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
}
[data-clew].clew-bottom:hover:after {
  transform: translateX(-50%) translateY(8px);
}
[data-clew].clew-left:after {
  top: 50%;
  right: 100%;
  transform: translateX(8px) translateY(-50%);
}
[data-clew].clew-left:hover:after {
  transform: translateX(-8px) translateY(-50%);
}
[data-clew].clew-right:after {
  top: 50%;
  left: 100%;
  transform: translateX(-8px) translateY(-50%);
}
[data-clew].clew-right:hover:after {
  transform: translateX(8px) translateY(-50%);
}