Changing the Color of the Black Stroke on the Megamenu Dropdown

A community member is having an issue with the Navbar 5 component in Webflow. They are trying to style the whole component, but are getting a black stroke at the bottom of the megamenu when the dropdown menu is open. The community member is asking how they can change the color of this stroke. Another community member suggests clearing the bottom border to resolve the issue, but there is no explicitly marked answer.