Around half of internets users use a smartphone for browsing the internet which make the website responsiveness for smaller screen sizes of utmost importance. Webflow has for different screen size breakpoints by default and more can be added through custom media queries which makes creating responsive website straightforward.
The desktop version's navigation bar is a traditional header with text links. From 991 pixel screen width down, navigation is done using a hamburger menu that open menu drawer from the right. It is much easier for to click the with the thumb if the drawer appears from the right. Unless you are left-handed but according to Google left-handed people make only about 10% of people worldwide.
The desktop responsiveness is taken care of by using percentages, EM units and max width properties to have a uniform design across different desktop screen widths. Responsiveness for smaller screen widths can be easily achieved through Webflow four breakpoints: desktop, tablet, mobile landscape and mobile. The CSS on desktop cascade down to tablet and mobile breakpoints but CSS on mobile doesn't affect tablet or mobile landscape.