I'm exporting a textbook as a Fixed-Format ePub via InDesign 2020 but noticed vertical text get exported horizontally instead! Here is an example of what I mean:
Here's how it should look like:
Does anyone know how I can preserve the text rotation? There are hundreds of examples of this issue in the book. Would there be a 'global' setting/CSS to resolve this?
Do you have control over the Indesign table styles?
See: https://helpx.adobe.com/in/indesign/using/table-cell-styles.html
If the table regions are styled correctly, you should be able to get the styles exported in the CSS. I haven't worked in the latest Indesign, and EPUB table exports have been patchy in the past. However, if you have custom table styles applied, you can edit the CSS to make it match the source as close as possible.