Back In Left
Crosses from the left at 70 percent scale, pauses a beat on its mark, then swells to full size with a small overshoot keyframe. Wide travel suits hero cards and slides.
Also known as: back in left animation css, back in from left, slide in and scale up.
Back
HTML
<div class="kfa-back-in-left">Back</div>
CSS
.kfa-back-in-left {
--c: var(--kfa-color, #3b82f6);
font-size: var(--kfa-size, 16px);
display: grid;
place-items: center;
width: 5.5em;
height: 5.5em;
border-radius: 1em;
background: var(--c);
color: #fff;
font-family: system-ui, sans-serif;
font-weight: 700;
box-shadow: 0 0.6em 1.4em -0.6em color-mix(in srgb, var(--c) 70%, transparent);
animation: kfa-back-in-left-kf 1s both;
}
@keyframes kfa-back-in-left-kf {
0% {
opacity: 0.7;
transform: translateX(-9em) scale(0.7);
animation-timing-function: cubic-bezier(0.22, 1, 0.36, 1);
}
58%, 64% {
opacity: 0.7;
transform: translateX(0) scale(0.7);
animation-timing-function: cubic-bezier(0.33, 1, 0.68, 1);
}
88% { opacity: 1; transform: scale(1.04); }
100% { opacity: 1; transform: scale(1); }
}
@media (prefers-reduced-motion: reduce) {
.kfa-back-in-left, .kfa-back-in-left *, .kfa-back-in-left::before, .kfa-back-in-left::after, .kfa-back-in-left *::before, .kfa-back-in-left *::after {
animation-duration: 0.01ms !important;
animation-iteration-count: 1 !important;
transition-duration: 0.01ms !important;
}
}Customizing this snippet
- Color: set
--kfa-coloron the element or a parent. Currently previewing#3b82f6. - Base size: set
--kfa-size. Every other dimension is inem, so the whole thing scales together. Currently previewing16px. - Speed: change the duration on the
transitionoranimationshorthand. Staggered delays are relative, so they keep their rhythm. - Reduced motion: the rule at the end of the CSS turns the motion off for people who asked their OS for less of it. Keep it.