Add card-portrait class

css/m4lab.css

@@ -457,6 +457,11 @@ justify-content:space-evenly;}
   width: 18rem;
 }
 
+.card-portrait {
+  width: 18rem;
+  height: 25rem;
+}
+
 .no_text_decoration {
   text-decoration: none
 }