first commit

src/lib/StickyMenu.js

@@ -0,0 +1,12 @@
+export default function StickyMenu(selector = '.appie-sticky') {
+    document.addEventListener('scroll', () => {
+        const element = document.querySelector(selector);
+        if (element) {
+            if (document.body.scrollTop > 100 || document.documentElement.scrollTop > 100) {
+                element.classList.add('sticky');
+            } else {
+                element.classList.remove('sticky');
+            }
+        }
+    });
+}