Most websites these days are implimented using
rem units of measure. This allows components and elements conform better to the environment they are being rendered in. It seems that all UI design tools sort of ignore this aspect of implimentation, everything always seems to be shown in
px and a developer needs to know what the base font size has been set to and then manually calculate what the
rem value would be.
What would maybe be useful is to have a base font size defined in the project settings, and then be able to show both the defined
px value as well as the calculated
rem value for that setting. For instance, if the base font size was set to
16px and the designer set a border radius of a button to
4px it could show the defined value as well as the calculated
0.25rem that the developer could use when building that button component.