Adding pop up

static/app.js

@@ -30,4 +30,18 @@ buttons.forEach(button => {
         slides.children[newIndex].dataset.active = true
         delete activeSlide.dataset.active
     })
-  })
\ No newline at end of file
+  })
+
+document.addEventListener("DOMContentLoaded", function() {
+    showPopup();
+});
+
+function showPopup() {
+    document.getElementById("popup-container").style.display = "block";
+    document.body.style.overflow = "hidden"; // Disable scrolling
+}
+
+function closePopup() {
+    document.getElementById("popup-container").style.display = "none";
+    document.body.style.overflow = "auto"; // Enable scrolling
+}