M3E primarily applies the Material Design 3 easing and duration system to provide consistent, emotionally tuned transitions across components. A subset—including buttons, loading indicators, and switches—have adopted the Material Design 3 motion physics system , bringing spring-based dynamics and velocity-aware responsiveness to components where expressive motion is essential.

The Material Design 3 design tokens are implemented as custom CSS properties. Design tokens are named, platform-agnostic variables that represent visual design decisions—such as color, typography, spacing, and elevation—in a reusable, consistent format.

Motion tokens are surfaced using the standardized prefix --md-sys-motion-* and are defaulted to spec-aligned values. M3E provides the Theme component which can be used to systematically control whether standard or expressive motion schemes are used through its motion attribute.

M3E honors reduced motion system settings by dynamically disabling or simplifying transitions for users who prefer minimal motion. Components respond to the prefers-reduced-motion media query, ensuring that expressive motion never compromises comfort or accessibility.