To customize Bottom Nav Bar use the Bottom Nav Bar Customization card on the Experience Edit page.

Settings on the Bottom Nav Bar Customization card
- Title: general nav bar titles settings.
- Color
- Font
- Font size
- Line height
- Subtitle: general settings for all the subtitles displayed on the nav bar.
- Color
- Font
- Font size
- Line height
- Timeline line color: set the color of the Timeline line in the app.