Bootstrap Carousel

bsc.html

<div id="carouselExampleIndicators" class="carousel slide" data-ride="carousel">

  <ol class="carousel-indicators">
    {% if advertisment %}
      {% for s in advertisment %}
    <li data-target="#carouselExampleIndicators" data-slide-to="{{ forloop.counter0 }}" {% if forloop.first %} class="active" {% endif %}></li>
    {% endfor %}
  {% endif %}
  </ol>

  <div class="carousel-inner">
    {% if advertisment %}
      {% for a in advertisment %}
    <div class="carousel-item {% if forloop.first %} active {% endif %} ">
      {% if a.link %}
        <a {% if internal_ad == No  %} {{ internal_ad }} target="_blank" {% endif %} href="{{ a.link }}"><img width="1540" class="d-block w-100"  src="{{ a.ad_image.url }}" alt="{{ a.description }}"></a>
      {% else %}
        <img class="d-block w-100" width="1540" src="{{ a.ad_image.url }}" alt="{{ a.description }}">
      {% endif %}
    </div>
      {% endfor %}
    {% endif %}
  </div>

  <a class="carousel-control-prev" href="#carouselExampleIndicators" role="button" data-slide="prev">
    <span class="carousel-control-prev-icon" aria-hidden="true"></span>
    <span class="sr-only">Previous</span>
  </a>

  <a class="carousel-control-next" href="#carouselExampleIndicators" role="button" data-slide="next">
    <span class="carousel-control-next-icon" aria-hidden="true"></span>
    <span class="sr-only">Next</span>
  </a>

</div>