This case was issued by muradaliyev88 in django-markdown-editor repository. as answered by rudolfbyker If you are writing MarkDown for PanDoc, you can do this:
{height=100px}
or
{style="border: 1px solid;height:100px"}
result example
This also work if using a-href
[link-title](https://to-link-url){target="_blank"}
, eg: link-title