Use of raw html nodes causing an issue when using jupyter-book due to thebe config

[mmcky]

@AakashGfude we have these raw html in our source markdown files. I am looking to get rid of them in favour of a pure md/myst solution due to thebe config getting added by jupyter-book automatically making sphinx-tojupyter acceptance of raw html nodes problematic.

```{raw} html
<div id="qe-notebook-header" align="right" style="text-align:right;">
        <a href="https://quantecon.org/" title="quantecon.org">
                <img style="width:250px;display:inline;" width="250px" src="https://assets.quantecon.org/img/qe-menubar-logo.svg" alt="QuantEcon">
        </a>
</div>
```

Does this have any affect on our html. It doesn't seem to -- it looks like it is just some html that is used in the download notebooks as a quantecon logo header? Is that right?

[mmcky]

Does our theme just not show this (or is this a visual element on our html).

[mmcky]

ah ok -- so we have in our css

#qe-notebook-header {
    display:none
}

[mmcky]

• move this to sphinx-tojupyter as a header setting

[mmcky]

Closing this in favour of the issue that is being tracked in sphinx-tojupyter