Responsive Design is the technical ability to adapt website layouts to the user's device. It makes sense to provide websites with Responsive Design because screen size and resolution vary from device to device.
For example:
- Desktops (17”-27”)
- Notebooks (13“-17“)
- Smartphones (< 5”) - portrait and landscape mode
- Tablets (7”-12“) - portrait and landscape mode
- TV (30”-70” +)