added images to articles

assets/css/main.css

@@ -337,23 +337,12 @@ body:has(#menu-controller:checked) {
   @apply underline;
 }
 
-/* Responsive hides for hybrid header 
-@screen sm {
-  .hidebasic {
-    @apply invisible;
-  }
-
-  .hidehamburger {
-    @apply visibile;
-  }
-}
-
-@screen md {
-  .hidebasic {
-    @apply visibile;
-  };
-
-  .hidehamburger {
-    @apply invisible;
-  }
-}*/
+/* */
+.thumbnail {
+  min-width: 300px;
+  height: 180px;
+  background-repeat:no-repeat;
+  background-size:cover; 
+  background-position:center;
+  box-shadow: 10px 10px 30px 2px rgba(0, 0, 0, 0.6);
+}