I want to print Twitter Bootstrap Thumbnails as same as screen, but they expand horizontally and background color turns black. I am using Twitter Bootstrap 2.1.1(twitter-bootstrap-rails 2.1.3) and Chrome on Mac.
My problem is reproduced on this page:
http://twitter.github.com/bootstrap/components.html#thumbnails
Here are screenshots as example.


I would appreciate any help.
UPDATE
Thanks to zeMicro’s answer, this problem is fixed. If you are using twitter-bootstrap-rails, you can remove responsive.css by editing bootstrap_and_overrides.less.
And you can change the background color by specifying it in your css file.
That’s because of bootstrap’s responsive design. The following line is important:
Change it to
Then the responsive stylesheet is ignored while printing.