mobile friendly

script.js

@@ -7,11 +7,11 @@ input.addEventListener("input", (event) => {
 const form = document.getElementById('userinfo');
 
 const checkboxes = form.querySelectorAll('input[name="interests"]');
-const checkedCount = Array.from(checkboxes).some(cb => cb.checked);
+const checkedCount = Array.from(checkboxes).some(cb => cb.checked).length;
 
 form.addEventListener('submit', (event) => {
 	if (checkedCount < 1) {
 		event.preventDefault();
-		alert('Please select at least one country.');
+		alert('Please select at least one interest.');
 	}
 });