I tried to create reveal slides with embedded webpage and noticed that the iframe was not rendered properly.
Here is a MWE:
`````
---
title: Testing Self-contained for iframe
format: 
  revealjs:
    self-contained: true
---

## A slide that contains an iframe

Iframe doesn't seem work properly with self-contained.

<iframe src="https://quarto.org/" title="https://quarto.org/" width="960" height="500"></iframe>

`````
The output:
![image](https://user-images.githubusercontent.com/8799996/164865528-b35df479-c026-4c42-ad7e-3d90bb752f72.png)

Any suggestion on how to handle this?
2022-04-23T02:15:28Z
fyuniv
closed
iframe not properly rendered with self-contained
https://github.com/quarto-dev/quarto-cli/issues/718