Large fixed-width text

When reading our web-based server documentation in Ubuntu Firefox, I
have always seen overly-large fixed-width text.  In looking at our CSS
files, specifically text.css, I see:
#txtArchives pre {    font-size:150%;}#txtArchives tt {    font-size:150%;}

This certainly looks wrong, and explains what I am seeing.  Does anyone
know why it is there?

The actual code that is causing a problem in my browser is in
geckofixes.css:
#docContainer tt, #docContainer pre, #docContainer code {    font-size:1.4em;}

and below it is this contradicting code for multi-tag content:
#docContainer tt tt, #docContainer tt code, #docContainer tt pre {  font-size: 1.0em;}#docContainer pre code,
#docContainerpre tt, #docContainer pre pre {  font-size: 1.0em;}#docContainer code code, #docContainer code tt,
#docContainercode pre {  font-size: 1.0em;}
 

Again, why is it there.  There are no comments indicating its purpose,
and it is clearly causing problems on my Firefox/Ubuntu setup.

--  Bruce Momjian  <bruce@momjian.us>        http://momjian.us EnterpriseDB
http://enterprisedb.com
 + If your life is a hard drive, Christ can be your backup. +