/* adattato da https://codepen.io/Moiety/pen/nuelx */
[data-tooltip][tabindex="0"] {
    display: inline-block;
    position: relative;
    text-decoration: underline #000 dotted;
    text-decoration-skip-ink: none;
    text-decoration-thickness: 10%;
  }
  [data-tooltip][tabindex="0"]:after {
    display: none;
    position: absolute;
    bottom: 110%;
    left: 50%;
    padding: 0.3em 0.4em;
    width: 10em;
    text-align: center;
    transform: translateX(-50%);
    border-radius: 3px;
    color: #fff;
    background-color: rgb(0, 0, 0);
    pointer-events: none;
    content: attr(data-tooltip);
  }
  [data-tooltip][tabindex="0"]:before {
    display: none;
    position: absolute;
    bottom: 110%;
    left: 50%;
    z-index: 2;
    transform: translate(-50%, 50%) rotate(45deg);
    width: 6px;
    height: 6px;
    background-color: #000;
    content: "";
  }
  [data-tooltip][tabindex="0"]:focus::after, [data-tooltip][tabindex="0"]:focus::before, [data-tooltip][tabindex="0"]:hover::after, [data-tooltip][tabindex="0"]:hover::before {
    display: block;
  }
  [data-tooltip][tabindex="0"][data-side=right]::after, [data-tooltip][tabindex="0"][data-side=right]::before {
    bottom: 50%;
    left: 100%;
    margin-left: 10px;
  }
  [data-tooltip][tabindex="0"][data-side=right]:after {
    transform: translate(0, 50%);
  }
  [data-tooltip][tabindex="0"][data-side=right]:before {
    transform: translate(-50%, 50%) rotate(135deg);
  }
  [data-tooltip][tabindex="0"][data-side=bottom]:after, [data-tooltip][tabindex="0"][data-side=bottom]:before {
    bottom: auto;
    top: 110%;
  }
  [data-tooltip][tabindex="0"][data-side=bottom]:after {
    transform: translate(-50%, 0);
  }
  [data-tooltip][tabindex="0"][data-side=bottom]:before {
    transform: translate(-50%, -50%) rotate(225deg);
  }
  [data-tooltip][tabindex="0"][data-side=left]:after, [data-tooltip][tabindex="0"][data-side=left]:before {
    right: 100%;
    bottom: 50%;
    left: auto;
    margin-right: 10px;
  }
  [data-tooltip][tabindex="0"][data-side=left]:after {
    transform: translate(0, 50%);
  }
  [data-tooltip][tabindex="0"][data-side=left]:before {
    transform: translate(50%, 50%) rotate(315deg);
  }