fix(cards): Allow usage of semantic headings without breaking the style

src/components/card/style.scss

@@ -31,6 +31,11 @@
       margin: 0 auto;
     }
 
+    > h1, h2, h3, h4, h5, h6 {
+      margin: 0;
+      padding: 0;
+    }
+
     > .card-title {
       line-height: 1.3em;
       font-size: 1.125em;