Can I customize the appearance of Mozilla Firefox?

@genevieve_boehm 

Yes, you can customize the appearance of Mozilla Firefox by using themes, extensions, and add-ons. Themes are pre-designed packages that change the look of the browser. Extensions and add-ons are pieces of software that add new features and functionalities to the browser.

To customize the appearance of Firefox, follow these steps:

1. Open Mozilla Firefox and click on the "Customize Firefox" button (three horizontal lines) on the upper-right corner of the window.
2. Click on "Customize" from the drop-down menu.
3. From there, you can drag and drop various toolbar icons, rearrange and remove the ones you don't need, and add new ones.
4. Click on "Themes" to apply different pre-designed themes. You can choose from a variety of themes available online or create your own by clicking on "Create New Theme".
5. To add new functionalities and features to the browser, click on "Add-ons" and find extensions and add-ons that are compatible with Firefox.
6. Once you've installed your desired themes and extensions, you can restart the browser to see the changes take effect.