Bootstrap's default utility classes can be found on the official Bootstrap Documentation page. The custom utilities below were created to extend this theme past the default utility classes built into Bootstrap's framework.
Grow In Animation Utilty
Note: This utility animates the CSS transform property, meaning it will override any existing transforms on an element being animated! In this theme, the grow in animation is only being used on dropdowns within the navbar.
Fade In Animation Utilty
Note: This utility animates the CSS opacity property, meaning it will override any existing opacity on an element being animated!