first commit

src/components/Footer.jsx

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+import { useRef } from 'react'
+import footerHtml from '../data/layout-footer.html?raw'
+import { useNavFix } from '../hooks/useNavFix'
+
+export default function Footer() {
+  const ref = useRef(null)
+  useNavFix(ref)
+  return <div ref={ref} dangerouslySetInnerHTML={{ __html: footerHtml }} />
+}