Is it possible to remove the stroke on the Layer GIS?

TagoIO Dashboards
1

I need to separate several region and I intend to use Layer GIS from the map widget for this. When I zoom back, the stroke appear bigger and it doesn’t suit my need.

Currently, with my test, I obtain something like that:

694×591 37.1 KB

I want to have something like that :

629×575 19.5 KB

Those are example made on https://geojson.io/.

Is it possible?