feat: responsive layout

[yangxingyuan]

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

Now the default theme doesn't support responsive layout, which is necessary for mobile scene.

Describe the solution you'd like

There are following parts should be finished:

• Mini navbar. For example:
  

• Mini sidebar: For example:

• The sticky menu bar. For example:

Describe alternatives you've considered

No response

Additional context

No response

Validations

• 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.

[spicylemonhaha]

Let me try

[spicylemonhaha]

7aaaddb