Print style updates

I added the link patch separately for now since I'm not sure if everyone agrees with that change. Personally, I feel like we should keep the link.

I also marked the custom Bootstrap code with a comment `// Bootstrap specific changes start/end`.

BTW, https://github.com/twbs/bootstrap/pull/14790/files?w=false since I kept the original file's indentation.

/CC @mdo @cvrebert @hnrch02