A previous challenge discussed the `ease-out` keyword that describes an animation change that speeds up first and then slows down at the end of the animation. On the right, the difference between the `ease-out` keyword (for the blue element) and `linear` keyword (for the red element) is demonstrated. Similar animation progressions to the `ease-out` keyword can be achieved by using a custom cubic Bezier curve function.
In general, changing the `p1` and `p2` anchor points drives the creation of different Bezier curves, which controls how the animation progresses through time. Here's an example of a Bezier curve using values to mimic the ease-out style:
Remember that all `cubic-bezier` functions start with `p0` at (0, 0) and end with `p3` at (1, 1). In this example, the curve moves faster through the Y-axis (starts at 0, goes to `p1` y value of 0, then goes to `p2` y value of 1) than it moves through the X-axis (0 to start, then 0 for `p1`, up to 0.58 for `p2`). As a result, the change in the animated element progresses faster than the time of the animation for that segment. Towards the end of the curve, the relationship between the change in x and y values reverses - the y value moves from 1 to 1 (no change), and the x values move from 0.58 to 1, making the animation changes progress slower compared to the animation duration.
# --instructions--
To see the effect of this Bezier curve in action, change the `animation-timing-function` of the element with id of `red` to a `cubic-bezier` function with x1, y1, x2, y2 values set respectively to 0, 0, 0.58, 1. This will make both elements progress through the animation similarly.
# --hints--
The value of the `animation-timing-function` property of the element with the id `red` should be a `cubic-bezier` function with x1, y1, x2, y2 values set respectively to 0, 0, 0.58, 1 .