We should load the `vcard.css` file to the shadowRoot of the edit template and clean up that file to only handle styling for the edit mode, without leaking classes or selectors outside of it.
Bug 1798967 Comment 0 Edit History
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We should load the `vcard.css` file to the shadowRoot of the edit template and clean up that file to only handle styling for the edit mode, without leaking classes or selectors outside of it. https://searchfox.org/comm-central/rev/7cf828bdfd92fa599316265fbf599062222c473f/mail/components/addrbook/content/vcard-edit/vCardTemplates.inc.xhtml#6