Hi, Inline SVG in XHTML has a filter with and ID (`<filter id="issue"`>) In an external CSS file, the line `filter: url(#issue);` produces a "Fragment identifier is not defined" (RSC-012) error. [EPUB sample](https://github.com/w3c/epubcheck/files/5629599/SVG_niveau_de_gris.zip)
Hi,
Inline SVG in XHTML has a filter with and ID (
<filter id="issue">)In an external CSS file, the line
filter: url(#issue);produces a "Fragment identifier is not defined" (RSC-012) error.EPUB sample