Basic styling for thumbnails in feed non-article posts

main-site/themes/temper/layouts/_default/list.html

@@ -22,6 +22,11 @@
         <p class="card-text">{{ .Description }}</p>
       {{ else }}
         <p class="card-text">{{ .Content }}</p>
+        {{  if .Page.Params.Thumbnail }}
+          <a href="{{ .Params.Thumbnail }}">
+            <img class="card-img" src="{{ .Params.Thumbnail }}">
+          </a>
+        {{ end }}
       {{ end }}
     </div>
     <div class="card-footer text-muted postcard">

main-site/themes/temper/static/css/style.css

@@ -162,8 +162,7 @@ a {
 a:hover { color: #EAA221; }
 
 .card-img { 
-	width: auto;
-	height: 150px;
+	width: 450px;
 }
 .card { 
   background-color: transparent;