title: Angular 4 renderer2 setStyle not working
body: <p>in a component, im attempting to target a dom node and change it's style but this does not work, can anyone tell me what i am doing wrong here?</p>
  
  <pre><code>@Input() progress:number = 0;
  
  ...
  
  ngOnChanges() {
      this.progressInnerEl = this.elRef.nativeElement.querySelector('.progress-inner');
      this.renderer.setStyle(this.progressInnerEl, 'width', this.progress+'%');
    }
  </code></pre>