fet2020/fet2020/templates/posts/partials/_posts_hero.html

<a href="{% url 'posts.show' post.slug %}">
    <div class="news-hero padding-bottom-1" style="background-image:url('{{ post.imageurl }}')">
        <div class="news-hero-text">
            <h1>{{ post.title | safe }}</h1>
            <h2>{{ post.subtitle|default_if_none:"&nbsp;" }}</h2>
            {{ post }}
        </div>
    </div>
</a>