diff --git a/internal/merge.go b/internal/merge.go
index e4ae80b..5c98061 100644
--- a/internal/merge.go
+++ b/internal/merge.go
@@ -93,28 +93,30 @@ func merge(base, doc *html.Node) (out *html.Node) {
 	footer := findRec(body, atom.Footer)
 	main := findRec(body, atom.Main)
 
-	if header == nil {
-		header = createElement(atom.Header)
-		body.InsertBefore(header, body.FirstChild)
-	}
+	// TODO: merge attributes
+
 	for {
 		n := findRec(newBody, atom.Header)
 		if n == nil {
 			break
 		}
+		if header == nil {
+			header = createElement(atom.Header)
+			body.InsertBefore(header, body.FirstChild)
+		}
 		reparentChildren(header, n)
 		n.Parent.RemoveChild(n)
 	}
 
-	if footer == nil {
-		footer = createElement(atom.Header)
-		body.InsertBefore(footer, body.FirstChild)
-	}
 	for {
 		n := findRec(newBody, atom.Footer)
 		if n == nil {
 			break
 		}
+		if footer == nil {
+			footer = createElement(atom.Header)
+			body.InsertBefore(footer, body.FirstChild)
+		}
 		reparentChildren(footer, n)
 		n.Parent.RemoveChild(n)
 	}