What template is used to publish HTML5 while using dita ot?

[hadih26673991]

I am using structured FrameMaker using dita topics. I am able to publish in both pdf and HTML5 formats. But my customizations (new elements added to dita) are not reflected "completely" in the HTML5 files. This is because I do not find the corresponding template files for the HTML to edit, as there are for the pdf format. Does anyone know if there are HTML templates in FrameMaker similar to the ones for PDF?