Hi Nasim,
Not sure why the @import rule doesn’t work, but I don’t think using url("https://fonts.googleapis.com/css2?family=Raleway:wght@500&display=swap") as the src attribute in @font-face is valid anyway
However, if I visit that URL and copy-paste the raw CSS rules back in global_z.css in place of the @font-face rule you currently have, I do see the Google font when I open the experiment
Jeremy