### Discussed in https://github.com/quarto-dev/quarto-cli/discussions/4861

<div type='discussions-op-text'>

<sup>Originally posted by **KaiWaldrant** March 16, 2023</sup>
I was making a bug issue about the tabset-panel inconsistency in border-colors used when I found out it was actually an issue with the themes or rather as i think about it a combination of quarto and the themes used. You can find a demo of the issue here: https://github.com/KaiWaldrant/quarto-panel-tabset-border

When using `.tabset-panel` quarto adds a `border-color` for the div with a class `tab-content`. When using a theme like 'simplex' for light-mode and 'darkly' for dark-mode. This will come in conflict as both of those themes do not have a border-color for the `tab-content` class.

I am unsure how to classify this issue and where to post it</div>
dragonstyle
2023-03-17T13:00:57Z
dragonstyle
bug
v1.3
closed
tabset panel border-color rendering incorrect
https://github.com/quarto-dev/quarto-cli/issues/4868