Reconfigure Project deleting old configuration of React that was not working

antigo/js/header_and_footer.js

@@ -0,0 +1,8 @@
+function toggleDiv() {
+  var div = document.getElementById("background_ambuigue");
+  if (div.style.display === "flex") {
+    div.style.display = "none";
+  } else {
+    div.style.display = "flex";
+  }
+}