Blur In

The element goes from fully transparent to fully opaque in place, or the reverse when leaving.

Add a "Fade In / Fade Out" animation (also called fade) to [where].
The element should go from fully transparent to fully visible in place when it appears, and fade back out the same way when it leaves: gentle, with no movement or scaling.
Once it has faded out, make sure it can no longer be clicked or reached with the keyboard, and switch instantly when the user prefers reduced motion (prefers-reduced-motion).

The element scales from a large, blurred, transparent state down into focus, like a puff of smoke, or the reverse when leaving.

Add a "Puff In / Puff Out" animation (also called puff) to [where].
When it appears, the element should shrink from a large, blurred, transparent state into sharp focus like a settling puff of smoke; when it leaves, it should swell back into a blur and vanish: soft and fairly quick.
Keep the enlarged state from pushing the layout or causing scrollbars, and switch instantly when the user prefers reduced motion (prefers-reduced-motion).

Words fade in sequentially on page load, often with a blur clearing, as if being generated.

Add a "Text Generate" effect to [where].
The words should fade in one after another while a soft blur clears from each, as if the text is being generated: steady and calm.
Play it once on load, let screen readers read the full text right away, and show it without motion for users who prefer reduced motion.

A tiny blurred version of an image sits in place and sharpens as the full image loads.

Add a "Blur-Up Placeholder" image loading effect (also called LQIP or a blur placeholder) to [where].
A tiny, heavily blurred version of the image should fill the image's space right away, and once the full image has loaded it should sharpen into place smoothly and fairly quickly.
Reserve the image's exact size so nothing shifts when it arrives, and clip the blurred edges so they do not bleed past the frame.

The element blurs progressively while fading or sliding away.

Add a "Blur Out" exit animation (also called text blur out or smoky text dissipate) to [where].
The content should grow more and more blurred while fading away in place: soft and fairly slow, as if it dissolves.
Hide or remove the element only after the blur finishes, and hide it instantly when the user prefers reduced motion (prefers-reduced-motion).

The element enters with an overshoot-and-settle bounce, either scaling up or dropping in from an edge.

Add a "Bounce In" entrance animation (also called bounce in down or bounce in up) to [where].
The element should grow from small, overshoot its full size and wobble a few times before settling: quick and springy.
Play it once so it doesn't keep pulling attention, and show the element in place without motion when the user prefers reduced motion (prefers-reduced-motion).

The element bounces slightly and then shrinks or flies off an edge.

Add a "Bounce Out" exit animation to [where].
The element should dip slightly, swell a little past its size, then shrink away while fading out: short and springy.
Remove it from the layout only after the animation ends, and hide it instantly when the user prefers reduced motion (prefers-reduced-motion).