Modern player slide ratio

Hi Gwyneth, 

With the modern player, it will always completely fills the learner’s browser, leaving no white space around the player. You can set it to open in a new browser window and display at the optimal size. The optimal size is your slide size plus additional width and height for the player frame. (You'll see these options noted in the tutorial here.)

We are tracking a feature request to proivde users an option to lock player size or to set a maximum size in case a learner opens the course in a very large browser window. This feature hasn't bubbled up to the top of our roadmap, but it's helpful to have your feedback to add!  Here's a bit more about how we work to prioritize feature requests.