Updated

assets/js/header.js

@@ -0,0 +1,20 @@
+ 
+   document.querySelectorAll('.nav-link').forEach(function(link) {
+    link.addEventListener('click', function(e) {
+
+      const navbarCollapse = document.getElementById('navbarSupportedContent');
+      const bsCollapse = new bootstrap.Collapse(navbarCollapse, {
+        toggle: false
+      });
+      bsCollapse.hide();
+
+      const targetId = this.getAttribute('href').split('#')[1];
+      const targetElement = document.getElementById(targetId);
+
+      if (targetElement) {
+        targetElement.scrollIntoView({
+          behavior: 'smooth'
+        });
+      }
+    });
+  });