When utilizing Angular, the mat-datepicker is displayed underneath the modal, even after attempting to modify the z-index

I am encountering a problem with a mat-datepicker displaying below a modal in my Angular application. Here are the key details:

Html:

<div class="col-12">
  <mat-form-field appearance="fill">
    <mat-label>Start Date</mat-label>
    <input matInput [matDatepicker]="pickerOne" placeholder="Enter a date" formControlName="year">
    <mat-datepicker-toggle matSuffix [for]="pickerOne"></mat-datepicker-toggle>
    <mat-datepicker #pickerOne class="custom-datepicker"></mat-datepicker>
    <mat-hint>This field is required *</mat-hint>
  </mat-form-field>
</div>

Css:

.cdk-overlay-container{ z-index: 2200 !important; }
::ng-deep .cdk-overlay-container {
  z-index: 2200 !important;
}

Ts:

constructor(private dialog: MatDialog){}

onCreate(){
  this.dialog.open(ModalComponent, {
    width: '60%'
  })
}

The mat-datepicker should open inside the modal and be completely visible. Current behavior: The mat-datepicker opens behind the modal, making it inaccessible. Attempted solutions:

Tried increasing the z-index of the cdk-overlay-container and ::ng-deep .cdk-overlay-container elements, but the issue persists. I would greatly appreciate any assistance. Have a wonderful evening. Thank you

Answer №1

Could you experiment with a few adjustments?

=> Update the z-index for both containers:

.modal-container .cdk-overlay-container {
  z-index: 2200;
}

.custom-datepicker .cdk-overlay-container {
  z-index: 2300; /* Make sure it's higher than the modal's */
}

=> Modify the encapsulation in your .ts file.

@Component({
  selector: 'app-modal',
  templateUrl: 'modal.component.html',
  styleUrls: ['modal.component.css'],
  encapsulation: ViewEncapsulation.None,
})

Answer №2

While working with the application styles, I came across the element ".cdk-global-overlay-wrapper" where I needed to adjust the "z-index" to a value of 1000. However, this adjustment did not take effect until I made changes to the encapsulation in the .ts file. The solution involved modifying the code as follows: Ts

@Component({
  selector: 'app-modal',
  templateUrl: './modal.component.html',
  styleUrls: ['./modal.component.css'],
  encapsulation: ViewEncapsulation.None,
})

CSS:

.cdk-global-overlay-wrapper {
  display: flex ;
  position: absolute ;
  z-index: 1000 ;
}

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