diff --git a/docs/element-properties.mdx b/docs/element-properties.mdx
index 5f5f88b..b4cdd5e 100644
--- a/docs/element-properties.mdx
+++ b/docs/element-properties.mdx
@@ -193,6 +193,11 @@ traverse(root.firstChild)
 
 </Accordion>
 
+<span>
+  <MDN i title="firstChild" url="https://developer.mozilla.org/en-US/docs/Web/API/Node/firstChild" />&nbsp;
+  <MDN i title="nextSibling" url="https://developer.mozilla.org/en-US/docs/Web/API/Node/nextSibling" />
+</span>
+
 
 <!-- ## Content - html, text