Online HTML manuals for Emacs missing important CSS

[Gavin Smith]

See for example:

https://www.gnu.org/software/emacs/manual/html_node/emacs/Misc-X.html#index-_002d_002dbasic_002ddisplay.
https://www.gnu.org/software/emacs/manual/html_node/elisp/Choosing-Window-Options.html

There are ¶ (pilcrow) symbols visible indicating copiable links.

texi2any outputs CSS rules to hide these unless the users moves their
mouse pointer over the text:

a.copiable-link {visibility: hidden; text-decoration: none; line-height: 0em}
span:hover a.copiable-link {visibility: visible}

However, these rules are missing.  Presumably they are removed when
the Emacs manuals are built for the web.

Could I suggest that either these CSS rules not be removed, or that
they be included in the "manual.css" file referenced by these pages?