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

@import "../../index.less";
@import "../../lib/icon.less";

.bi-tree-expander-popup.line {

  &:before {
    border-left: 1px dashed @border-color-dark-gray-line;
    position: absolute;
    content: "";
    height: 100%;
    left: -1px;
  }

  &.solid:before {
    border-left: 1px solid @border-color-dark-gray-line;
    position: absolute;
    content: "";
    height: 100%;
    left: -1px;
  }
}

.bi-theme-dark {
  .bi-tree-expander-popup.line {

    &:before {
      border-left: 1px dashed @border-color-dark-gray-line-theme-dark;
      position: absolute;
      content: "";
      height: 100%;
      left: -1px;
    }

    &.solid:before {
      border-left: 1px solid @border-color-dark-gray-line-theme-dark;
      position: absolute;
      content: "";
      height: 100%;
      left: -1px;
    }
  }
}