As we known, Epub 3.0 supports pop-up footnotes.
when we use Moonreader Plus and ibook to reade ebooks,it will autmatically hide the footnotes.
The Moonreader Plus developer appears to have modeled the rendering engine after the engine used by iBooks. Like iBooks it automatically hides aside footnotes; it even handles rearnotes without problems, which iBooks for iOS can't handle.
However, not all ePub3 apps behave in this way, because the ePub3 specs don't require reading apps to hide aside footnotes; they also don't require reading apps to display them as popups. I find the post in this link(
https://www.mobileread.com/forums/sh...d.php?t=264394)
Some ebook's footnote are not builded at the bottom of chapter (Front of </body> in .xhtml file ), usually at the front of quotation. So,when i use calibre ebook view or other reader, rather than Moonreader Plus and ibook,The footnotes will appear in the body of page.
it is annoyed for me.
So, How to hide footnote in cablire ebook view?
I try to use CSS by hidding the <aside> element (display:none

, it will hide footnote, but when i pop-up the footnote, it can not display too.
In EPUB 3 flowing and fixed-layout books, you can create pop-up footnotes by labeling footnotes with the appropriate epub:type values.
Because the <aside> element has an epub:type of footnote,
the text is hidden in the main body of the book. The text will only be seen by the reader in the context of the popup.I find the post in this link(
https://help.apple.com/itc/booksasse...cf8ecf5c8.html)