Is your feature request related to a problem? Please describe.

Now footer and sidebar cannot be used at the same time. We hope they can appear at the same time.

Describe the solution you'd like

• footer and sidebar can used at the same time

Describe alternatives you've considered

If allowed, maybe I can provide a PR？

Additional context

No response

Validations

• Follow our Code of Conduct
• Read the docs.
• Read the Contributing Guidelines.
• Check that there isn't already an issue that asks for the same feature to avoid creating a duplicate.