Added a toggle on panel

Author: Kato669

001-expanding cards/script.js

@@ -2,8 +2,8 @@ const panels = document.querySelectorAll(".panel");
 
 panels.forEach((panel) => {
   panel.addEventListener("click", () => {
-    removeActiveClasses();
-    panel.classList.add("active");
+    // removeActiveClasses();
+    panel.classList.toggle("active");
   });
 });