Note: twitter bootstrap used to include @page{size:a3} (e.g. as part of the file `styles.css` in bug 1759775's zipped-up testcase, which declares itself to be "Bootstrap v4.5.3")
However, that seems to have been removed as part of Bootstrap version 5, in this commit:
https://github.com/twbs/bootstrap/commit/473689ce5de5337984c16a9c5dacad328101ffb1#diff-108a57a50d5ebe203f447ef7bf1e5e53826bdb82baab2baa2b41b4158cdd4d09L1133
Bug 1763246 Comment 4 Edit History
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Note regarding the potential for sites to hit this: twitter bootstrap used to include @page{size:a3} (e.g. as part of the file `styles.css` in bug 1759775's zipped-up testcase, which declares itself to be "Bootstrap v4.5.3")
However, that seems to have been removed as part of Bootstrap version 5, in this commit:
https://github.com/twbs/bootstrap/commit/473689ce5de5337984c16a9c5dacad328101ffb1#diff-108a57a50d5ebe203f447ef7bf1e5e53826bdb82baab2baa2b41b4158cdd4d09L1133
Note regarding the potential for sites to hit this: twitter bootstrap used to include `@page{size:a3}` (e.g. as part of the file `styles.css` in bug 1759775's zipped-up testcase, which declares itself to be "Bootstrap v4.5.3")
However, that seems to have been removed as part of Bootstrap version 5, in this commit:
https://github.com/twbs/bootstrap/commit/473689ce5de5337984c16a9c5dacad328101ffb1#diff-108a57a50d5ebe203f447ef7bf1e5e53826bdb82baab2baa2b41b4158cdd4d09L1133