What screen size do you design for (computer)

I’m curious what screen size you usually design for (in the sketching phase) for computers?

I’ve been doing 1920x1080 so far in Sketch but now after seeing a few videos and whatnot I’m starting to think this isn’t ideal?

I ussually make everything responsive so it works onto all sizes

Yup, I mean in the initial stages of sketching though (before touching any code).

I’m asking what size you initially sketch the site for (when taking a desktop first approach)?

You have to use a 1920x1080 pixel screen size and use grid width 1140 pixel for Sketch for the computer.