Mobile bottom navigation bar with a sliding jello indicator and dynamically appearing sub-menu filters based on active selection

Jello Animated Sliding Tab Navigation

This is a Jello Animated Sliding Tab Navigation. It provides top-level categorization and context-aware sub-menus in a single mobile-friendly component. The function is to visually anchor the user’s location within an app while dynamically adapting the global color theme to match the active context.

Technologies:
HTML CSS JavaScript
Difficulty: Intermediate
Browser Support (as of Feb 2026):
Chrome Chrome 60+ Edge Edge 79+ Firefox Firefox 55+ Safari Safari 11+
Features:
Dynamic Theming Sliding Indicator Contextual Menu Jello Bounce
License: MIT
Mobile Tab Navigation

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See the Pen Mobile Tab Navigation.

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