Testing code section of the style sheet of this blog, adjusted some of the features. It should create a nice box and some background color around code snippets:
SQL*Plus: Release 10.1.0.2.0 . . . Connected to: Oracle Database 10g Enterprise Edition ..... . . .
The only problem I see is that the code text flows out the box when the browser is resized. Ahum, this is fixed by setting ‘wrap’