/**
 * Term reference tree widget: selection tree on the left, sortable track
 * list on the right. Transposed from the retired matminimal theme.
 *
 * Flexbox row instead of inline-block columns so the two blocks never wrap
 * onto separate lines, whatever their content width (the previous
 * inline-block version wrapped on environments with a narrower form region).
 */
.term-reference-tree.term-reference-tree-track-list-shown {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
}

.term-reference-tree.term-reference-tree-track-list-shown > ul {
  flex: 1 1 45%;
  min-width: 45%;
  padding-right: 1em;
  margin: 0;
}

.term-reference-tree.term-reference-tree-track-list-shown aside.term-reference-tree-track-list {
  flex: 1 1 55%;
  border-left: 1px solid #aaa;
  padding-left: 1em;
}