Add Python code for couple your code section

[kss682]

This PR implements the discussions of #211.

Add Python code examples for the couple your code section using nav tabs.

[kss682]

@uekerman
Could you please check if the python doc until meshes are as expected ?

[uekerman]

Looks good in principle. No need to also cover inline code. The code blocks are enough. And not need to bring the docstrings.

Be careful with details. The code should really run. Maybe test with a dummy on the side to be completely sure.

Where do the css changes come from? I am not saying that they don't make sense, I only want to understand better. Could you maybe add screenshots before and after?

I did not try to build the website.

You also pushed to #211. No need to update both. You could close #211 in favor of this one.

[kss682]

The css changes are from one of the commits from the original PR.
The css adds a box like feel and a background color for the nav tabs.
Curr

New

[uekerman]

Good job. A few minor tweaks and fixes below.

Good that you also caught a few missing v2-v3 updates as well 👍

I did not try building the website. Did you check that everything looks good?

[kss682]

I did build the site locally and the rendering looks like this.

[uekerman]

In my taste, the vertical margins before and after the code are a bit large. Could we decrease those?

[kss682]

How does this look ?
Reduced the vertical padding to 4px.