That depends on your requirements and constraints. "Designed with web technology" doesn't necessarily mean "designed for the public web". In many enterprise s

That depends on your requirements and constraints. "Designed with web technology" doesn't necessarily mean "designed for the public web". In many enterprise settings desktop-only is perfectly fine because applications developed for these environments often won't ever be accessed from a mobile device anyway. Even if they are it's usually only a small part of the application that needs to be available for mobile devices. In these cases, devoting an inordinate amount of time to making all of your design work flawlessly on mobile devices can mean a huge waste of resources. By the way, from a cursory check - while not particularly mobile-friendly - this UI toolkit is responsive (probably also because that makes perfect sense on the desktop as well) and seems to work alright on mobile devices, too.