Material-ui: Cannot customize width and height of dialog

[talmukund]

We want to have a dialog with scroll bar where we want height of dialog to be fixed, irrespective of number of items inside list. We have observed height can be increased from certain height but not decrease. We tried various styling but it's not working.

• [x] I have searched the issues of this repository and believe that this is not a duplicate.

Expected Behavior

Height should be customizable.

Current Behavior

Height of dialog is proportional to number of items.

Steps to Reproduce (for bugs)

1. Create a dialog
2. Add list items (count should be above 30) inside dialog
3. Add styling with different keywords.
4. Open dialog.

Context

Your Environment

| Tech | Version |
|--------------|---------|
| Material-UI | |
| React | |
| browser | |
| etc | |

[oliviertassinari]

@talmukund This demo is demonstrating how to set a max height:
https://github.com/mui-org/material-ui/blob/e49ce4f7c2df242062fe46a2f3aeb30f78a01ef1/docs/src/pages/demos/dialogs/ConfirmationDialog.js#L117