I have ebook in markdown files and use GitBook for generating epub file. Like usual, chapters are defined in SUMMARY.md and chapter files begins with a headings (the same like in summary):
Title of the chapter ====================
GitBook uses Calibre's tool ebook-convert to generate epub files what will have html files with title section like:
<body class="calibre"> <div class="page"> <h1 class="book-chapter2" id="calibre_toc_2">Title of the chapter</h1> <div class="section"> <h1 id="příběh-první" class="calibre17">Title of the chapter</h1>
First h1 have
display: none in CSS, so will not be visible in most readers, but some of them ignores it and renders heading twice.
Is there a way, to configure GitBook or epub-convert to not add second heading and keep table of contents working?