What is the best method for eliminating the border of an Angular mat-form-field when it is in a disabled state?

I've been attempting to eliminate borders from a mat-form-field when the field is disabled, but despite trying various solutions found online, I haven't been successful in removing the borders from the div.

Below is the code snippet:

<div *ngIf="readOnly" class="medium-2 columns read-only-true">
  <mat-form-field appearance="outline" class="full-width">
    <mat-label>Employee ID</mat-label>
    <input [disabled]="readOnly" class="emp_id" required [(ngModel)]="form.id" matInput name="empID" placeholder="EMP #">
  </mat-form-field>
</div>

This is what I have attempted so far:

First method:

.read-only-true .mat-form-field-outline-start {
  border-color: white;
}

.read-only-true .mat-form-field-outline-gap {
  border-color: white;
}

.read-only-true .mat-form-field-outline-end {
  border-color: white;
}

Second method:

.read-only-true .mat-form-field-outline .mat-form-field-outline-start {
  border: white !important;
}

.read-only-true .mat-form-field-outline .mat-form-field-outline-end {
  border: white !important;
}

Third method:

::ng-deep .read-only-true .mat-form-field-appearance-outline .mat-form-field-outline .mat-form-field-outline-start {
  border: 1px solid white !important;
}

::ng-deep .read-only-true .mat-form-field-appearance-outline .mat-form-field-outline .mat-form-field-outline-end {
  border: 1px solid white; !important
}

::ng-deep .mat-form-field-appearance-outline .mat-form-field-outline {
  color: white;
}

I would greatly appreciate any assistance with this matter. Please let me know if you require any additional information from my end.

Answer №1

To style CSS, you can use the following code:

::ng-deep .mat-form-field-appearance-fill.mat-form-field-disabled, ::ng-deep .mat-form-field-outline {
opacity: 0;
}

When it comes to HTML, here is an example snippet:

<mat-form-field appearance="fill" class="full-width">
  <mat-label>Employee ID</mat-label>
  <input matInput type="text" value="value" [disabled]="true" class="emp_id">
</mat-form-field>

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