bootstrap 4 navbar bottom shadow code example
Example 1: navbar box shadow
box-shadow: 0 2px 5px 0 rgba(0,0,0,0.16);
Example 2: boostrap shadow
No shadow
Small shadow
Regular shadow
Larger shadow
box-shadow: 0 2px 5px 0 rgba(0,0,0,0.16);
No shadow
Small shadow
Regular shadow
Larger shadow