Revert "Use better font-size in Firefox"
Revert "Use better font-size in Firefox"

This reverts commit 66533bf58984e65e215d0fab2a9d9b5c1627b32c.

Well, that was embarassing.  My page zoom settings were screwing
things up on my end; 13px is fine.

Asparagirl/ArchiveBot,emijrp/ArchiveBot,emijrp/ArchiveBot,Frogging101/ArchiveBot,ArchiveTeam/ArchiveBot,ArchiveTeam/ArchiveBot,falconkirtaran/ArchiveBot,Frogging101/ArchiveBot,emijrp/ArchiveBot,Frogging101/ArchiveBot,falconkirtaran/ArchiveBot,ArchiveTeam/ArchiveBot,ArchiveTeam/ArchiveBot,JesseWeinstein/ArchiveBot,falconkirtaran/ArchiveBot,Asparagirl/ArchiveBot,emijrp/ArchiveBot,Frogging101/ArchiveBot,emijrp/ArchiveBot,ArchiveTeam/ArchiveBot,JesseWeinstein/ArchiveBot,JesseWeinstein/ArchiveBot,JesseWeinstein/ArchiveBot,falconkirtaran/ArchiveBot,Frogging101/ArchiveBot,JesseWeinstein/ArchiveBot,falconkirtaran/ArchiveBot,Asparagirl/ArchiveBot,Asparagirl/ArchiveBot,Asparagirl/ArchiveBot