hyphens

When content on a page has a hyphen (Mon-Tue) and reaches the end of a line, in IE, Chrome and Safari the hyphen breaks and Tue drops to the next line. In firefox the hyphen does not break and Mon-Tue drops to the next line.

I uninstalled and reinstalled firefox and that did not make a difference.

In Css I tried numerous ways of trying to get the hyphen to break – word wrap, overflow wrap, word break … In one test using the word some-thing I tried word break normal and the hyphen didn’t break, and then when I put word break break word in css it broke like this:
some-thin
g

Also, in content when I add spaces between words the white spaces do not collasp. It’s what I want, but I don’t know why its happening.

Any help would be appreciated.

Jerry

Jerry