Model in Core UI Admin with ReactJs

Resources
Sample Repo: https://github.com/aaronscribner/bmpn-coreui-react
CoreUI: http://coreui.io/

Issue
I cannot seem to figure out how to set the modeler to the correct width and height when using this inside of the Core UI admin template. Does anyone have any experience with trying to embed this BPMN editor inside of a Core UI template?

I am also learning React and I seem to be beating my head against a wall right now.

Can you provide a screenshot?