diff --git a/js/main.js b/js/main.js
new file mode 100644
index 0000000..dc550b7
--- /dev/null
+++ b/js/main.js
@@ -0,0 +1,9 @@
+var toggler = document.getElementsByClassName("caret");
+var i;
+
+for (i = 0; i < toggler.length; i++) {
+  toggler[i].addEventListener("click", function() {
+    this.parentElement.querySelector(".nested").classList.toggle("active");
+    this.classList.toggle("caret-down");
+  });
+}
\ No newline at end of file