If you do not want your navbar links to be collapsed on smaller devices, then you need to remove the element.
The basic structure should look something like this....
If you want to keep the responsive functionality, then add the below code to within you container
div. This will give you a button to toggle the collapsed menu on smaller devices.
So then the end result would look something like this.
Also, you do not have to nest a
element within a
element for the dropdown menus. The correct structure for you navigation items should look like this.