
    <div>
      <label>
        <span>scale step:</span>
        <nz-input-number [(ngModel)]="scaleStep" [nzMin]="0.1" [nzStep]="1"></nz-input-number>
      </label>

      <button nz-button nzType="primary" (click)="onClick()">Preview</button>
    </div>
  