First, let me say that these forums are fantastic as is your documentation and overall support!
I’ve combed the forums. One of the clues mentioned in this thread https://theeventscalendar.com/support/forums/topic/need-help-using-a-separate-stylesheet/ led me to check to see that my custom style is indeed being included in the source…and it is not.
A sample page is /class/how-to-create-an-authentic-magnetic-message/2014-12-30/
My css file is at /my-child-theme/tribe-events/pro/tribe-events-pro.css
I’m sure I’m missing something simple…