What steps will reproduce the problem? 1. load test_css_layout.html in Firefox on Mac OS X 10.5.8 or Win 7 2. print preview the page

What is the expected output? What do you see instead? Should be the same layout as on the screen. Alignment is out. It's much worse on Windows 7.

I don't know if it's related to Firefox or the implementation. I've seen some misaligment in other browsers but I don't remember the code. I'll update the issue if I come across it.

The error shows either the box-sizing: border-box; property is present or not.

I notice even worse problems with wkhtmltopdf.