Need help updating the nav bar and footer

I have started a B2B marketing agency and decided to have ghost for our blog. The theme I have installed is called London. I need some help and guidance to update the navbar and the footer so that they match the rest of the site. Thanks

Hey Amit,

Welcome to the community! Can you be a little more specific with your description? Do you have access to the main site’s navbar source? If so, is it possible to directly port that section of the site into your current theme’s headers?