fineui/src/less/base/tree/tree.expander.less

@import "../../index.less";
@import "../../image.less";
@import "../../lib/icon.less";
.bi-tree-expander-popup.line:before {
  position: absolute;
  content: "";
  height: 100%;
  width: 24px;
  .imagePath(@icon-tree-vertical-line-1, 0, 0, repeat-y);
}

.bi-tree-expander-popup.line.solid:before {
  .imagePath(@icon-tree-solid-vertical-line-1, 0, 0, repeat-y);
  width: 24px;
  left: 8px;
}

.bi-theme-dark {
  .bi-tree-expander-popup.line:before {
    width: 24px;
    .imagePath(@icon-tree-vertical-line-1-theme-dark, 0, 0, repeat-y);
  }
  .bi-tree-expander-popup.line.solid:before {
    .imagePath(@icon-tree-solid-vertical-line-1-theme-dark, 0, 0, repeat-y);
    width: 24px;
    left: 8px;
  }
}