Align content on the left

[Akryum]

Feature request

Align the main content to the left for the default theme.

What problem does this feature solve?

Reading the documentation or a code example while having another window on top of the browser (for example code editor).

What does the proposed API look like?

N/A

How should this be implemented in your opinion?

Since the default theme is designed for documentation, it would make sense to align the main content to the left instead of centering it. This way one could easily grab his editor on the right of the screen and code while reading the doc.

Are you willing to work on this yourself?**

If time permits 😸

[yyx990803]

Could be a themeConfig option.