Epubs built by PreText yields errors when submitted to Google Books

[humanitiesclinic]

Despite the build to epub yielding 0 errors, and the output epub passing epubcheck with 0 errors as well, I get these errors when I submit the epub to Google Books:
EPUB/css/epub.css:1004, 20: An error occurred while parsing the CSS: Token ".code-display" not allowed here.

EPUB/css/epub.css:1004, 20: An error occurred while parsing the CSS: Token ".code-display" not allowed here.

EPUB/css/epub.css:1007, 20: An error occurred while parsing the CSS: Token ".code-display" not allowed here.

EPUB/css/epub.css:1007, 20: An error occurred while parsing the CSS: Token ".code-display" not allowed here.

EPUB/css/epub.css:1379, 18: An error occurred while parsing the CSS: Token ".autopermalink" not allowed here.

EPUB/css/epub.css:1379, 18: An error occurred while parsing the CSS: Token ".autopermalink" not allowed here.

EPUB/css/epub.css:1382, 18: An error occurred while parsing the CSS: Token ".autopermalink" not allowed here.

EPUB/css/epub.css:1382, 18: An error occurred while parsing the CSS: Token ".autopermalink" not allowed here.

EPUB/css/epub.css:1385, 20: An error occurred while parsing the CSS: Token "a" not allowed here.

EPUB/css/epub.css:1385, 20: An error occurred while parsing the CSS: Token "a" not allowed here.

May I know why is this so, and how to solve?

(Screenshot attached below also:)

[davidfarmer]

Please submit to the pretext-support google group

[humanitiesclinic]

Done, pending approval over there