Changing style of overlay container

Question

I use a git project for a virtual keyboard (https://ngx-material-keyboard.github.io/demo/). And I have some issues to get it running on a small device with 450*250 pixel.

At the end I found the necessary changes in the css if I modify it directly at the web browser with dev tools.

Now I have to find the right position to change the sources.

There will be used the overlay component from angular2-material to visualize the keyboard.

If I comment out the position in the cdk-overlay-container, it works:

.cdk-overlay-container {
/* position: fixed; */
z-index: 1000;

}

But I cant overwrite these from my angular application. Any suggestions?

Screenshot of changes

Answer 1

UPDATED ANSWER

From the official documentation:

Styling overlay components

Overlay-based components have a panelClass property (or similar) that can be used to target the overlay pane.

You can override the default dialog container styles by adding a css class in your global styles.css. For example:

.custom-dialog-container .mat-dialog-container {
    /* add your styles */
}

After that, you'll need to providies you css class as a panelClass parameter to your dialog:

this.dialog.open(MyDialogComponent, { panelClass: 'custom-dialog-container' })

Read this official documentation for more information.

---

ORIGINAL ANSWER

Use ::ng-deep in your component.css to override the default styles.

::ng-deep .cdk-overlay-container {
    /* Do you changes here */
    position: fixed; 
    z-index: 1000;
}

Answer 2

To be able to override the Material CSS classes from your component styles, you will need to set the View Encapsulation to None on your component:

@Component({
    templateUrl: './my.component.html' ,
    styleUrls: ['./my.component.scss'], //or .css, depending what you use
    encapsulation: ViewEncapsulation.None,
})

Answer 3

I found that by using the main/default "Styles.css" styling changes for the CDK (as well as Material and Animations) are picked up properly. (caveat) I am using Angular 4.