Displaying an image over another image - development

Displaying an image over another image

I have a carousel showing images. Some of them are thumbs of youtube video in that case i want an image of a play button to be displayed over the thumb image to show that it is a video not a simple image.

<div class="carousel-inner">
            @foreach($realisation->images as $key => $img)
                @if($img->type == 'image')
                <div class="item "> 
                    @if(File::exists($img->image))
                        <img src="" class="image" alt="realisation"/> 
                    @endif
                </div>
                @else
                <div class="item "> 
                    <a href=""  data-lity>
                        <img src="" class="image" alt="realisation">
                        <img src=""  alt="">
                    </a>  
                </div>
                @endif
            @endforeach
        </div>

from Laravel Questions and Answers https://laravelquestions.com/laravel/displaying-an-image-over-another-image/
via Lzo Media