Get rid of lines on mobile nav using Pro Header Builder

Hi there. In the site below, if you trigger the mobile menu, there are light blue lines between the top level menu items. However, I can’t find in the settings where I can change these such that they don’t appear (basically making it the same color as the dark blue in the normal background). Can someone point this out to me or tell me what it might be called? Thanks!

Hello There,

Thank you for the very detailed post information. To get rid of the lines in your mobile menu, please edit your header again and click on the menu toggle. Please make sure that the border is set to none. Please see image below:

Please let us know how it goes.