It be great to support tabbers in Obsidian.
all that would be needed is some custom html insertion, and custom CSS based on callout classes.
when we use TABBER, we can get the element or its children in HTML
<div data-callout="tabber" class="callout"></div>
mkdocs already supports this in markdown. see docs
=== "Tab 1" Markdown **content**. Multiple paragraphs. === "Tab 2" More Markdown **content**. - list item a - list item b
r-markdown also supports tabber in markdown, see docs