Animation performance
Animations stay smooth when they change properties the browser can handle without recalculating layout, mainly transform and opacity.
Definition
Animations stay smooth when they change properties the browser can handle without recalculating layout, mainly transform and opacity.
Use case
Move things with transform instead of top and left, and the animation avoids stutter on slower phones.
Related terms
Articles
An Interactive Guide to CSS Transitions
Has a clear section on which properties animate smoothly and why.