In an effort to make the answer more easily found for others who are also asking the wrong questions, and looking in the wrong places. And also for documentation purposes. -M document-css=false will stop pandoc from inserting CSS into the HTML header. The long story.. An ansible script sneakily did a brew upgrade on a macOS dev machine just prior to a big sur update. It upgraded pandoc (which had not been upgraded in a while), then the OS got upgraded. After reboot, pandoc started inserting CSS into the header that broke the styling. I tried to run pandoc on a fresh install of linux mint with the latest updates and the *latest version of pandoc* to troubleshoot. It didn't insert CSS into the header, and the output styling was not affected. This further led me to believe the OS update broke something. I Grabbed a new mac that also had the new version of Big Sur, installed the latest version of pandoc, and it generated lots of CSS that broke the styling. So yes John, you're 100% correct that it had nothing to do with the Big Sur update, and pandoc got upgraded. -M document-css=false proved that. Thank you, I owe you a drink! -James On Tue, May 4, 2021 at 1:35 PM John MacFarlane wrote: > > It has nothing to do with Big Sur. Most likely you've installed > a different version of pandoc than you were used to. > > So, check the changelog > https://pandoc.org/releases.html > > and you'll see an announcement of some changes to the default > CSS, as well as a way to disable it if you don't like it. > > The html5shiv thing has always been there; it's a way to get > the HTML5 features to work with old IE versions, and it is just > a harmless comment otherwise. (At this point we could probably > remove it. IE 9 was released in 2011, and anyone using an older > version at this point should be very strongly advised not to!) > > James Kayser writes: > > > I use Pandoc to convert a markdown table into a standalone HTML, but > also > > merge it with some HTML using the -B option. A recent update to MacOS > Big > > Sur causes pandoc to add additional, unwanted CSS information in the > > > section that throws off the formatting, as well as this comment at the > end. > > > > > > > > This did not occur prior to the MacOS update, and this does not occur in > a > > Debian/Ubuntu based linux distribution. Only macOS Big Sur (so far that > > I've found in my limited testing) seems to be affected. > > > > Manually deleting the excess information in the head corrects the > > formatting, but I cannot figure out a way to have pandoc not put it in > > there. I've tried using the -B -H, but it keeps putting it in there > above > > my CSS formatting. I even tried changing my default browser in the OS > > settings to see if that corrected it, since it seems like maybe its > > detecting IE9? I dunno. Does anyone know how to fix? Been at this for a > > couple of days now. > > > > Thanks, > > James > > > > -- > > You received this message because you are subscribed to the Google > Groups "pandoc-discuss" group. > > To unsubscribe from this group and stop receiving emails from it, send > an email to pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > > To view this discussion on the web visit > https://groups.google.com/d/msgid/pandoc-discuss/32ca13a2-ae66-4157-9a3f-3a8546b9e5b8n%40googlegroups.com > . > -- You received this message because you are subscribed to the Google Groups "pandoc-discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To view this discussion on the web visit https://groups.google.com/d/msgid/pandoc-discuss/CAPqHhWX9Fa2-bKJshWDhBHUw70FZkW98p6P647DqN3ShZELBMw%40mail.gmail.com.