assign class to post-image

css/style.css

@@ -46,6 +46,7 @@ img {
   width: 100%;
   height: auto;
   vertical-align: middle;
+  object-fit: cover;
 }
 
 .content {

templates/partials/blog-list-item.html.twig

@@ -2,7 +2,7 @@
 
 <a class="card-link" href="{{ page.url }}">
             <article class="blog-card">
-            {{ hero_image.html|absolute_url|raw }}
+            {{ hero_image.html(meta.title|e, meta.alt_text|e, 'post-image')|absolute_url|raw  }}
               <div class="post-details">
                 <h4 class="post-meta">{{ page.date|date("d.m.Y") }}</h4>
                 <h2 class="post-title">{{ page.title }}</h2>