Laravel 5.4 Bootstrap row class for every 3 columns - Blade Template

products.blade.php

@foreach($products->chunk(3) as $items)
<div class="row">
   @foreach($items as $item)
   <div class="col-md-4 portfolio-item">
      <a href="#">
      <img class="img-responsive" src="{{ 'uploads/'.$item->product_image_url }}" alt="">
      </a>
      <h3>
         <a href="/view-product-details/{{ $item->id }}">{{ $item->product_name }}</a>
      </h3>
      <p>{{ str_limit($item->product_description, 121) }}</p>
   </div>
   @endforeach
</div>
@endforeach

ProductsController.php

public function showProducts(){

    $products = DB::table('products')->paginate(9);

    return view('products', ['products' => $products]);
}