https://learnweb.skilling.us/lesson/reusing-navbars
Reusing navbars | Learn the web
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https://www.quackit.com/html/html_editors/scratchpad/?example=/bootstrap/bootstrap_3/tutorial/bootstrap_3_navbars_inverted
Bootstrap 3 Navbars Inverted
Preview HTML code with this online HTML viewer. Bootstrap 3 navbars inverted.
bootstrapnavbarsinverted