I am trying to make a section above the nav-bar menu that has two images (one on left one on right), text in the middle and a button to the far right so I thought I would try to create a region and then put a block into it. I am using Drupal 8.6 in debug mode and the file name suggestions are themes/myTheme/templates/system/html.html.twig and themes/myTheme/templates/system/page.html.twig. Online tutorials indicate that I should use
Does the file I should edit change with the theme? Which file should I edit for a Bootstrap theme?