here are the links to bootstrap, font-awesome, google-fonts & figma
use <weight> value from 100 to 900
font-name: poppins
font-family: "Poppins", serif;
font-weight: <weight>;
font-name: nunito
font-family: "Nunito", serif;
font-weight: <weight>;
font-name: poppins
font-family: "Open Sans", serif;
font-weight: <weight>;
the more you know the better <weight>
100 Thin (Hairline)
200 Extra Light (Ultra Light)
300 Light
400 Normal (Regular)
500 Medium
600 Semi Bold (Demi Bold)
700 Bold
800 Extra Bold (Ultra Bold)
900 Black (Heavy)
disclaimer: make sure to duplicate the figma file to be able to edit and not all font weights are supported to 100-900. however, what i have seen is that, most of them supports 400-800.