Is there a way to incorporate the "fullscreen" icon in an embedded Prezi?

I have embedded a Prezi into my school’s learning management system (Blackboard) and realised the absence of a “fullscreeen” icon identical to the one use in the player in Prezi.com.

Is there a way to incorporate the “fullscreen” icon in an embedded Prezi, perhaps, through the modification of the HTML code?

If you use the “Embed prezi”, it should be visible full screen option (after clicking “Start prezi”). It may help to increase the area of ​​the window that displays the presentation in the system (height and width).

Unfortunately, the fullscreen option don’t come on (see below). Is it a limitation of the learning management system (Blackboard)? Or I should modify the code to modify the player.