Consistent user experiences across all screens
How are you viewing this right now?
More specifically, what size is the screen you’re reading this information on? Are you looking at 6-inch phone, 8-inch tablet, or perhaps a 21-inch desktop? How are you interacting with the content? By swiping or pinching?
The point that all these questions lead to is that users could be using any type of device and of any size to interact with your website. As mobile devices become more prevalent it is critical that your digital presence provides a great user experience across all screens.