[Feature Request] capability to render tabs from subheading

[AdarshRawat1]

Currently, tabs can be created using list items only.

It would be nice if awesome CSS could create tabs out of subheadings as well.

# heading 
<div class="tabbed">
## <b class="tab-title"> sub heading 1 </b>
Content of subheading 1
## <b class="tab-title"> sub heading 2 </b>
Content of subheading 2 
</div>

Or something like this

<b class="tab-title">
### macOS dependencies 
</b>

[iamAyushChamoli]

Messed this one up, will be creating a new PR with a better solution

[iamAyushChamoli]

@AdarshRawat1 Can you check if this works well?