taxonomy.theme.css

.taxonomy-term-preview {
  background-color: #eee;
}
.taxonomy-term-divider-top {
  border-bottom: none;
}
.taxonomy-term-divider-bottom {
  border-top: 1px dotted #ccc;
}

File

core/modules/taxonomy/css/taxonomy.theme.css

.taxonomy-term-preview {
  background-color: #eee;
}
.taxonomy-term-divider-top {
  border-bottom: none;
}
.taxonomy-term-divider-bottom {
  border-top: 1px dotted #ccc;
}