acklen-keystone/admin/client/App/isomorphic/style/UI-Component/tree/rtl.less

Web Application Framework and Admin GUI / Content Management System built on Express.js and Mongoose

html[dir="rtl"] {
  .ant-tree-checkbox {
    &.ant-tree-checkbox-checked {
      .ant-tree-checkbox-inner {
        &:after {
          right: auto !important;
          left: 4px;
          border-right: 2px solid #fff;
          border-left: 0;
          -webkit-transform: rotate(45deg) scale(1) !important;
          -ms-transform: rotate(45deg) scale(1) !important;
          transform: rotate(45deg) scale(1) !important;
        }
      }
    }
  }
}