Here’s how to save web pages as MHT files using Firefox: 1. Go to addons.mozilla.org/en-US/firefox/addon/unmht/?src=cb-dl-rating and click on ‘Add to Firefox’. 2. When prompted, click ‘Allow’ to permit the installation of UnMHT extension. 3. Wait while the UnMHT extension is downloaded. 4. Click ‘Install Now’. 5. Click ‘Restart Now’ to restart...