Ensure that fixed layout documents have no margins or padding

[rkwright]

This issue is a Bug

Related issue(s) and/or pull request(s)

readium/readium-shared-js#423

Expected Behaviour

A fixed layout document should not be styled (except possibly for themes). No margins, padding or other styles should be injected into the document.

Observed behaviour

Currently, if the author of an EPUB does not specify a margin on the body element, the RS will add a margin of 8 pixels from the user-agent style sheet.

Steps to reproduce

1. Load the test file (see below)
2. Check page 4. Note that the red rectangle is cut off
3. Check the margin in the browser's inspector.

Test file(s)

https://drive.google.com/open?id=10y7ZJKdoG2yDVfqXLRkCWrDcbRDhW_eq

Product

• Readium Chrome extension (current)
• Readium cloud reader app
• SDKLauncher-OSX

Additional information

None

[danielweck]

Pull Request: readium/readium-shared-js#424

[danielweck]

Tested with the cloud reader and Ric's original Tiny-FXL.epub