The height field is grayed out and doesn’t let me change it. It is set to “Auto”. Does this mean that the height is fixed on all screens to the same pixel size? Or will it adapt based on viewport height?
Thanks!
Hey Alex 
The Basic Buttons height is defined by the text size in it to make sure it won’t overflow. You can set it to be higher by setting a bigger than the text by setting a Min-Height to it.
For completely design freedom you can use the Styled Buttons. This button height can be controlled regardless of the content in it
Here’s a short video:
Didn’t know styled buttons had more flexibility, thanks for the video! Very informative!