Headline text colour changes when exported to epub

Hi guys,

Orzalana here. I’m new to this forum and new also to epub.
Using indesign should be no problem for me specially on the print side.

So here’s my main problems trying to convert a published book (that i did) to an epub version:
1. Using articles when exporting, how do you keep a blank page on? say a blank page before and after a page full of texts?
2. one headline that I did when exported changes the colour from blue to brown. All the other paragraph styling that i created are fine.

3. And lastly some tips from you guys, the book I’m working on has many photos but need this to be reflowable format. Layout is not an issue as long as the proper flow is followed. What do you recommend? Right now I’m anchoring them at the last paragraph of every chapter. I’m thinking grouping the multiple photos as one full page and insert them in between texts? But the problem I foresee is when text re-flows there will be a funny gap in between photos?

Many thanks in advance
Orzalan