Ensures the hero button icon is centered within the circle.
Ensures the hero button icon is centered within the circle.

OfficeDev/Office-UI-Fabric,zkoehne/Office-UI-Fabric,OfficeDev/Office-UI-Fabric,waldekmastykarz/Office-UI-Fabric,zkoehne/Office-UI-Fabric,waldekmastykarz/Office-UI-Fabric