box<str> vs string

_sass/_base.scss

@@ -141,6 +141,16 @@ code {
     background-color: white;
 }
 
+/**
+ * Code formatting
+ */
+h1 pre, h1 code,
+h2 pre, h2 code,
+h3 pre, h3 code,
+h4 pre, h4 code {
+    font-size: inherit;
+}
+
 code {
     padding: 1px 5px;
 }