MediaWiki talk:Common.css

I just figured out that, pretty much across the board in modern browsers, adding the following to your CSS here (within 'blockquote') will make them automatically respect the line breaks people paste in without it breaking the box:

 word-wrap: break-word;      /* IE 5.5-7 */
 white-space: -moz-pre-wrap; /* Firefox 1.0-2.0 */
 white-space: pre-wrap;      /* current browsers */

Source/example: https://developer.mozilla.org/en-US/docs/Web/CSS/white-space#Line_breaks_inside_%3Cpre%3E_elements

Paging D. A. Hosek.

--DA (talk) 04:09, 16 October 2016 (PDT)