topic Re: How to expose the components modifiable by CSS in an Instant App, so I know what to change? in ArcGIS Instant Apps Questions

How to expose the components modifiable by CSS in an Instant App, so I know what to change?

Michael_Rehberg — Thu, 23 Jul 2026 23:03:58 GMT

Good afternoon. I'm once again good and lost in the documentation and could use a hand.

Where do I find the names of the specific features that are controlled by CSS for any given Instant App? The blank CSS window is there, I get that's where we can override the app's settings by entering CSS code. But I don't know where to find the specific bits and pieces and CSS settings to make any changes.

Does this require me to have a full understanding of the Calcite system to intuitively figure out what CSS overrides will affect the various components of any given Instant App? Or is there something more direct, like a listing of the components that are tweakable in an Instant App?

Re: How to expose the components modifiable by CSS in an Instant App, so I know what to change?

Michael_Rehberg — Fri, 24 Jul 2026 00:15:42 GMT

Hm okay so devtools is a thing.

Re: How to expose the components modifiable by CSS in an Instant App, so I know what to change?

KellyHutchins — Mon, 27 Jul 2026 16:04:38 GMT

It is sometimes tricky to determine what can be modified via custom css. As you noted above dev tools is a big help to try and figure it out. You can also look at the calcite documentation to determine what can be customized.

Here's an example: https://developers.arcgis.com/calcite-design-system/components/action/#styles