argos/dmp-frontend/src/app/dataset-profile-form/rule-component/rule.component.html

<div [formGroup]="form">
  <div>
    <div fxLayout="row">
      <div fxFlex>
        <mat-form-field class="full-width">
          <mat-select placeholder="Rule Type" formControlName="ruleType">
            <mat-option>field value</mat-option>
          </mat-select>
        </mat-form-field>
      </div>
      <div fxFlex>
        <mat-form-field class="full-width">
          <input matInput type="text" placeholder="Target" formControlName="target" (change)="TargetValidation()">
        </mat-form-field>
      </div>
      <div fxFlex>
        <mat-form-field class="full-width">
          <input matInput type="text" placeholder="Value" formControlName="value">
        </mat-form-field>
      </div>
    </div>
  </div>
</div>