Hot to remove dashed line border on Header and Footer

I have a dashed line border around my header menu and part of the footer (where the orange social icons are). I’ve been going through the settings and am not finding where I can turn these off (or make them same color as background so they don’t show). Anyone able to tell me where I would need to go to edit these settings? Thanks!

The page I need help with: [log in to see the link]