icingadb-web/public/css/widget/custom-var-table.less

.custom-var-table {
  .level-1 th {
    padding-left: .5em;
  }

  .level-2 th {
    padding-left: 1em;
  }

  .level-3 th {
    padding-left: 1.5em;
  }

  .level-4 th {
    padding-left: 2em;
  }

  .level-5 th {
    padding-left: 2.5em;
  }

  .level-6 th {
    padding-left: 3em;
  }

  thead th {
    padding-left: 0;
    text-align: left;
    font-weight: bold;
    font-size: 1.167em;

    > span {
      :nth-child(1),
      :nth-child(2) {
        display: none;
      }
    }
  }

  &.can-collapse thead th > span, // Icinga Web 2 < 2.12
  &[data-can-collapse] thead th > span { // >= 2.12
    :nth-child(1) {
      display: none;
    }

    :nth-child(2) {
      display: inline-block;
    }
  }

  &.collapsed thead th > span {
    :nth-child(1) {
      display: inline-block;
    }

    :nth-child(2) {
      display: none;
    }
  }
}