### Pandas version checks - [x] I have checked that the issue still exists on the latest versions of the docs on `main` [here](https://pandas.pydata.org/docs/dev/) ### Location of the documentation https://pandas.pydata.org/docs/dev/reference/api/pandas.io.formats.style.Styler.html#pandas.io.formats.style.Styler ### Documentation problem The attributes `columns` and `index` are not documented for the `Styler` class. ### Suggested fix for documentation Document those attributes. Initially reported here in `pandas-stubs` : https://github.com/pandas-dev/pandas-stubs/issues/1102