Here are the principles of Responsiveness of Web design:
o The flow of the screen size adjusts according to the size of the screen.
o The density of the pixels should be in flexible units.
o Breakpoints that allow the change in the layout.
o The content covering the same width on the screen of the mobile does not make sense. Therefore, the value of the width should be appropriate.
o Try to wrap up the elements to make it understandable.
o Decide what comes first and easy; the desktop or the mobile.