I’m using renderModes to create X(HT)ML content to be exported to a pdf. Knowing which css features are supported by Confluence Storage Format is a struggle (especially with the web’s infamous vertical centering problem).
It seems flex and inline-block display formats are unavailable. As is absolute and relative positioning. I’ve also tried translate and even ac:vspace:
<ac:image ac:vspace="100px"><ri:url ri:value="url" /></ac:image>.
If anyone has other ideas or has successfully conquered this particular dilemma, please divulge.