* responsive padding for main content (according to https://msdn.microsoft.com/en-us/windows/uwp/layout/screen-sizes-and-breakpoints-for-responsive-design)
* responsive padding for main content (according to https://msdn.microsoft.com/en-us/windows/uwp/layout/screen-sizes-and-breakpoints-for-responsive-design)

XElementSoftware/RYB,XElementDev/RYB,XElementDev/RYB,XElementDev/RYB