add beian info in the footer

src/css/custom.css

@@ -215,3 +215,6 @@ table th, table td {
   }
 }
 
+.beian {
+  font-size: 88%;
+}

src/theme/Footer/index.js

@@ -0,0 +1,21 @@
+import React from 'react';
+import Footer from '@theme-original/Footer';
+
+export default function CustomFooter(props) {
+  React.useEffect(() => {
+    const currentDomain = window.location.hostname;
+    const icpNumber = currentDomain === 'goframe.org.cn'
+      ? '<a href="https://beian.miit.gov.cn/" target="_blank" rel="noreferrer">蜀ICP备2024111610号</a >' : null;
+    if (icpNumber) {
+      const footerElement = document.querySelector('.footer__bottom');
+      if (footerElement) {
+        const icpElement = document.createElement('div');
+        icpElement.className = "mt-2 beian"
+        icpElement.innerHTML = icpNumber;
+        footerElement.appendChild(icpElement);
+      }
+    }
+  }, []);
+
+  return <Footer {...props} />;
+}