diff --git a/Libraries/LibHTML/CSS/Default.css b/Libraries/LibHTML/CSS/Default.css
index 71bde27c4f7..54f20fba0a8 100644
--- a/Libraries/LibHTML/CSS/Default.css
+++ b/Libraries/LibHTML/CSS/Default.css
@@ -49,7 +49,8 @@ frame, frameset,
 h1, h2, h3, h4,
 h5, h6, noframes,
 ol, p, ul, center,
-dir, hr, menu, pre {
+dir, hr, menu, pre,
+header, footer {
     display: block;
 }