grapesjs/stylesheets/tooltip.css

[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  font-family: Helvetica, sans-serif;
  background: rgba(51, 51, 51, 0.9);
  background: rgba(55, 61, 73, 0.9);
  border-radius: 3px;
  bottom: 100%;
  color: #fff;
  content: attr(data-tooltip);
  display: block;
  font-size: 12px;
  left: 50%;
  line-height: normal;
  max-width: 32rem;
  opacity: 0;
  overflow: hidden;
  padding: 0.6rem 1rem;
  pointer-events: none;
  position: absolute;
  text-overflow: ellipsis;
  -webkit-transform: translate(-50%, 0);
  -ms-transform: translate(-50%, 0);
  transform: translate(-50%, 0);
  transition: all 0.216s ease;
  z-index: 99;
}

[data-tooltip]:focus::after,
[data-tooltip]:hover::after {
  opacity: 1;
  -webkit-transform: translate(-50%, -0.5rem);
  -ms-transform: translate(-50%, -0.5rem);
  transform: translate(-50%, -0.5rem);
}

[data-tooltip][disabled],
[data-tooltip].disabled {
  pointer-events: auto;
}

[data-tooltip-pos=right]::after {
  bottom: 50%;
  left: 100%;
  -webkit-transform: translate(0, 50%);
  -ms-transform: translate(0, 50%);
  transform: translate(0, 50%);
}

[data-tooltip-pos=right]:focus::after,
[data-tooltip-pos=right]:hover::after {
  -webkit-transform: translate(0.5rem, 50%);
  -ms-transform: translate(0.5rem, 50%);
  transform: translate(0.5rem, 50%);
}

[data-tooltip-pos=bottom]::after {
  bottom: auto;
  top: 100%;
  -webkit-transform: translate(-50%, 0);
  -ms-transform: translate(-50%, 0);
  transform: translate(-50%, 0);
}

[data-tooltip-pos=bottom]:focus::after,
[data-tooltip-pos=bottom]:hover::after {
  -webkit-transform: translate(-50%, 0.5rem);
  -ms-transform: translate(-50%, 0.5rem);
  transform: translate(-50%, 0.5rem);
}

[data-tooltip-pos=left]::after {
  bottom: 50%;
  left: auto;
  right: 100%;
  -webkit-transform: translate(0, 50%);
  -ms-transform: translate(0, 50%);
  transform: translate(0, 50%);
}

[data-tooltip-pos=left]:focus::after,
[data-tooltip-pos=left]:hover::after {
  -webkit-transform: translate(-0.5rem, 50%);
  -ms-transform: translate(-0.5rem, 50%);
  transform: translate(-0.5rem, 50%);
}