add bold, italics tags to article

core/src/scss/5_components/_article.scss

@@ -25,6 +25,14 @@
     margin-left: 1.5rem;
   }
 
+  em {
+    font-style: italic;
+  }
+
+  strong, b {
+    font-weight: bold;
+  }
+
   :where(p, ul, ol) + h1 {
     margin-top: 1.5rem;
   }