sourcecode/front/src/layouts/TreeLayout/index.less

.tree-layout {
  margin-bottom: 20px;
  .ant-tree.ant-tree-show-line li span.ant-tree-switcher {
    background: unset;
  }
  .ant-tree-checkbox-disabled {
    display: none;
  }
  .hidden {
    display: none;
  }
}