I believe what you are talking about is the font used for the forum TEXTAREA boxes (the Forum Input box). In previous versions of UBB,threads, it was unset and would use whatever the browser software was programmed to use. There was no default font set. IE would use its proprietary font setting which was different from Firefox, which was different from Opera, which was different from Safari...etc, So each visitors using different browsers (or operating systems) would see the website differently. Since UBB.threads 7.6.0, there has been a default/basic set of display rules added, so that each user on different browsers would share a common experience.

In this order, the default common font-family used for <textarea> is "arial, helvetica, clean, sans-serif".

To modify that default:

1) Go to Control Panel > Styles
2) Find the forum style you'd like to update, and click its name.
3) Navigate to Forum Properties > .forum-input
4) add to the bottom of that list, "font-family:Courier New;"
Click on "Update or Add Style" button at the bottom.

Your change affects the <textarea> form fields across your entire forums for that single Style.

Note: your long lines will still wrap for mobile devices. To prevent that, use the [code]your content[/code] bbcode tag
Attachments
20181215_10-02-17-font-default.png 20181215_10-02-17-font-courier-new.png

Last edited by isaac; 12/15/2018 2:07 PM. Reason: attached screenshots

Current developer of UBB.threads PHP Forum Software
Current Release: UBBT 7.7.5 // Preview: UBBT 8.0.0
isaac @ id242.com // my forum @ CelicaHobby.com