Head Shake
A 3D no: the box turns its face left and right on the vertical axis with a small sideways drift, fading out over a second. Softer than an error shake. Needs perspective() in the transform.
Also known as: head shake animation css, shake no animation, headshake.
No
HTML
<div class="kfa-head-shake">No</div>
CSS
.kfa-head-shake {
--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-head-shake-no 1s ease-in-out both;
}
@keyframes kfa-head-shake-no {
0%, 88%, 100% { transform: perspective(14em) translateX(0) rotateY(0); }
12% { transform: perspective(14em) translateX(-0.35em) rotateY(-32deg); }
30% { transform: perspective(14em) translateX(0.28em) rotateY(26deg); }
48% { transform: perspective(14em) translateX(-0.18em) rotateY(-17deg); }
64% { transform: perspective(14em) translateX(0.08em) rotateY(8deg); }
77% { transform: perspective(14em) translateX(0) rotateY(-2.5deg); }
}
@media (prefers-reduced-motion: reduce) {
.kfa-head-shake, .kfa-head-shake *, .kfa-head-shake::before, .kfa-head-shake::after, .kfa-head-shake *::before, .kfa-head-shake *::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.