<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>Navibar Demo</title> <script src="navibar.js"></script> <style> body { margin: 0; padding: 0; } navigation-bar { width: 100vw; position: fixed; bottom: 0; /* ... */ } navigation-bar a img { opacity: 0.3; /* ... */ } </style> </head> <body> </body> </html>