Hi, I'm using Bootstrap (no additional theme) essentially in my top navigation I just want there to be three things: the logo, the main navigation, and another navigation for external links. However, I don't want the external links navbar to be a part of the first navbar because I don't need any emphasis on it. Instead, I want it in a collapsible menu that can be toggled using the "three dash button". When the site gets resized, I want the first navigation to join the external links in the collapsible menu. How can I do this?

Also, on a sidenote, when I create a new menu, the links don't have the same styling as the first menu. Can I just copy and paste the styling from the first menu into the second?

Finally, is it possible to directly make changes to the HTML because working with it through the Drupal interface decreases my own ability?