https://github.com/NG-ZORRO/ng-zorro-antd/pull/8972
feat(module:popover,popconfirm,tooltip): overlayClassName supports space delimited classes by...
Angular UI Component Library based on Ant Design. Contribute to NG-ZORRO/ng-zorro-antd development by creating an account on GitHub.
space delimitedfeatmodulepopovertooltip