Change MapView scale on mobile device in CSS?

[JaredPilbeam2]

I can't seem to find the element to change the scale. Can it be done in the CSS? I've tried this:

    @media (max-width: 480px) {
        view MapView {
            scale: 1300000,
        }‍‍‍‍

[RobertScheitlin__GISP · Accepted solution]

Jared,

   You can not do MANY things in css. This will have to be done in JS code.

[JaredPilbeam2]

I guess what I was asking was whether it's possible to have two different scales, one for the PC and one for the phone.

[RobertScheitlin__GISP]

Yes, it is just not something that can be done in css. It has to be done in JS code.

[JaredPilbeam2]

Robert,

Thanks for directing me away from the CSS. Whereas before I created a Map instance, I now created a WebMap. And this seems to have answered my question. 

       /************************************************************
       * Creates a new WebMap instance. A WebMap must reference
       * a PortalItem ID that represents a WebMap saved to
       * arcgis.com or an on-premise portal.
       *
       * To load a WebMap from an on-premise portal, set the portal
       * url with esriConfig.portalUrl.
       ************************************************************/
        var webmap = new WebMap({
         portalItem: {
             id: "93b7e42b2ca64790aa2315da5eceaff9"
         }
        });
      /************************************************************
       * Set the WebMap instance to the map property in a MapView.
       ************************************************************/
        var view = new MapView({
          map: webmap,
          container: "viewDiv",‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

I had a lot of help from these two examples:

Load a basic WebMap | ArcGIS API for JavaScript 4.9 

Swap web maps in the same view | ArcGIS API for JavaScript 4.9