.glossary {
  color: #212529;
  text-decoration: underline dotted;
  cursor: help !important;
  position: relative;
  border: none;
  padding: 0;
}

/* only needed for popup = "click" */
/* popup-definition */
.glossary .def {
  display: none;
  position: absolute;
  z-index: 1;
  width: 400px;
  bottom: 100%;
  left: 50%;
  margin-left: -200px;
  background-color: #333;
  color: white;
  padding: 5px;
  border-radius: 6px;
}
/* show on click */
.glossary:active .def {
  display: inline-block;
}
/* triangle arrow */
.glossary:active .def::after {
  content: ' ';
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: #333 transparent transparent transparent;
}

/* glossary table styles */
.glossary_table td {
  vertical-align: top;
}

.glossary_table td:first-child {
  padding-right: 1em;
}

.glossary_table tr {
  border-bottom: 1px solid #ddd;
}

.glossary_table tr:nth-child(even) {
  background-color: #99999933;
}