animationTimingFunction

The animation-timing-function CSS property defines how an animation progresses over its duration. It specifies the acceleration curve of the animation, controlling the speed at which the animation transitions from its start value to its end value. This allows for more natural and visually appealing animations by mimicking real-world motion.

Commonly used values include keywords like ease, linear, ease-in, ease-out, and ease-in-out. The ease keyword is the default and provides a slow start, accelerates in the middle, and then slows down at the end. Linear results in a constant speed throughout the animation. Ease-in makes the animation start slowly and then accelerate. Ease-out makes the animation start quickly and then decelerate towards the end. Ease-in-out combines both ease-in and ease-out effects, resulting in a slow start and a slow end with acceleration in between.

In addition to keywords, the cubic-bezier() function offers precise control over the timing curve. It takes four numerical arguments that define the control points of a cubic Bezier curve. These points determine the shape of the timing function, allowing for highly customized animation progressions. Another option is the steps() function, which divides the animation into a specified number of discrete steps, creating a stair-step effect rather than a smooth transition.