Desktop Design/Spacing Best Practice on Adalo?

My web app use case needs wide grids/lists of collections, but even if I select desktop/web option when creating a new app, most of the templates still seems to be oriented towards mobile app design widths for small screens… ALL of which still specify pixel width for screens or components…

Is there any template (or best practice, or way) in Adalo for NOT specifying pixel widths for screens/components but having more of a ‘flex box’ design whereby component/list etc auto fills the width of the screen (or container)… e.g full screen/container width for the component and then auto margin is 20px or 30px or whatever you specify as the margin from the edge of the screen width which is then applied to left and right margins?