Test case :

• the viewport (height or width) without proper value, such as height=705, width=

ePubCheck 4.2.4 :

• output ERROR(HTM-046) in fixed layout epub
• but all pass in reflowable epub with itemref properties="rendition:layout-pre-paginated".

Sample 1 :

fxl_without_viewport_width.epub.zip

content.opf

<meta property="rendition:layout">pre-paginated</meta>
<meta property="rendition:spread">landscape</meta>
<meta property="rendition:orientation">auto</meta>

Cover.xhtml

<meta name="viewport" content="height=705, width="/>

epubcheck-4.2.4 :

• ERROR(HTM-046): Fixed format item has no viewport defined.

Sample 2 :

rfl_without_viewport_width.epub.zip

content.opf

<itemref idref="Cover.xhtml" properties="rendition:layout-pre-paginated rendition:spread-none rendition:page-spread-center"/>

Cover.xhtml

<meta name="viewport" content="height=705, width="/>

epubcheck-4.2.4 is all pass.

• We think the rfl_without_viewport_width.epub should also output ERROR(HTM-046), or HTM-047 (Html viewport is missing height and/or width.)

reference #419