diff --git a/iframe-localhost-2026.html b/iframe-localhost-2026.html
new file mode 100644
index 00000000..37fb1112
--- /dev/null
+++ b/iframe-localhost-2026.html
@@ -0,0 +1,29 @@
+<!doctype html>
+<html lang="zh-CN">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Iframe Localhost 2026</title>
+    <style>
+      html,
+      body {
+        margin: 0;
+        padding: 0;
+        width: 100%;
+        height: 100%;
+        overflow: hidden;
+        background: #f5f5f5;
+      }
+
+      iframe {
+        display: block;
+        width: 100%;
+        height: 100%;
+        border: 0;
+      }
+    </style>
+  </head>
+  <body>
+    <iframe src="http://localhost:2026" title="localhost-2026"></iframe>
+  </body>
+</html>
