Print html from rmarkdown exactly as it appears on the screen

[cderv]

@huguesm

For example: red text appears black, and "hr" elements do not appear.

Can you then provide an example of this document ?

What I am trying to explain is that when printing, special CSS rules will apply. The link I shared is to help debug and find the rules that is not applying to print mode, and why.

Once identified we can then know what to do. It could be a user's CSS rule, a Bootstrap's Rulle, a R Mardown internal CSS rule, a Pandoc's CSS rule...

You see that this is several place this could be. I need more element to solve.

I don't know if you search around, so you may already have seen that, but here is a related problem because of Bootstrap own rules

How to print html pages with colors?

I think this is related by the fact that default document is using Bootstrap 3 and this framework has some specific CSS rules for printing. This is a limitation (issues) of Bootstrap 3. Please see the discussion in Setting !important is a way to make the CSS rules the most important, so it will override any other and so it will apply even during Printing. As I explained in the issue linked above, you could use newer version of bootstap to avoid this issue. --- title: "Untitled" output: html_document: theme: version: 4 --- it should be better.

Using bootstrap v4 solves it. Maybe this what you encounter.

Hope it helps