Brian,
Just to be on the safe side, I would recommend changing the fitemtitle class specifically for the lesson view page. You can do this by adding the following line to your moodle2/mod/lesson/styles.css file:
#page-mod-lesson-view .fitemtitle {text-align:left; width:50%;}
A width of 50% is reasonable, if you keep the text of the right pairs short enough (see #3 below).
Notes.-
- The display of the matching question in Quiz is better than in Lesson.
- A number of small fixes are needed for the Lesson module. Hopefully a new maintainer will be appointed by Moodle HQ, who will take care of the many bug reports which are pending.
- The problem with the matching question type, as well in Quiz as in Lesson is that it makes use of a dropdown list for the pairs to be matched on the right. When the text of those pairs is longish, the dropdown lists may take a large amount of horizontal space, which reduces the horizontal space available to the text of the left pairs. A better solution would be to adopt the "drag & drop" feature of the Hot Potatoes matching question type. But this feature has its own (vertical) problems.