AI CSS Animations

Mood Picker Radio Buttons

One cartoon face that reacts to the pick: its mouth bends from frown to flat to smile, its color warms and it gives a little wobble. The mouth is a clipped ellipse whose height animates.

Also known as: mood selector css, smiley face feedback css, how do you feel picker.

HTML

<div class="rad-mood-picker" role="radiogroup" aria-label="How are you feeling?">
  <div class="rad-mood-picker-face" aria-hidden="true"><i></i><i></i><b></b></div>
  <div class="rad-mood-picker-options">
    <label><input type="radio" name="rad-mood-picker" value="bad"><span>Bad</span></label>
    <label><input type="radio" name="rad-mood-picker" value="okay" checked><span>Okay</span></label>
    <label><input type="radio" name="rad-mood-picker" value="great"><span>Great</span></label>
  </div>
</div>

CSS

.rad-mood-picker {
  --c: var(--rad-color, #3b82f6);
  font-size: var(--rad-size, 18px);
  --mood: #fbbf24;
  --mouth: 0em;
  --flip: 1;
  --drop: 0em;
  --blush: 0;
  display: grid;
  justify-items: center;
  gap: 0.8em;
  font-family: system-ui, sans-serif;
  line-height: 1.2;
}
.rad-mood-picker:has(label:nth-of-type(1) :checked) {
  --mood: #fb7185;
  --mouth: 0.45em;
  --flip: -1;
  --drop: 0.3em;
}
.rad-mood-picker:has(label:nth-of-type(3) :checked) {
  --mood: #34d399;
  --mouth: 0.6em;
  --blush: 1;
}
.rad-mood-picker-face {
  position: relative;
  width: 3.6em;
  height: 3.6em;
  border-radius: 50%;
  background: var(--mood);
  box-shadow: inset 0 -0.25em 0 rgba(0, 0, 0, 0.08);
  transition: background-color 0.3s cubic-bezier(0.22, 1, 0.36, 1);
  animation: rad-mood-picker-wobble-b 0.55s ease;
}
.rad-mood-picker:has(label:nth-of-type(1) :checked) .rad-mood-picker-face { animation-name: rad-mood-picker-wobble-a; }
.rad-mood-picker:has(label:nth-of-type(3) :checked) .rad-mood-picker-face { animation-name: rad-mood-picker-wobble-c; }
.rad-mood-picker-face::before,
.rad-mood-picker-face::after {
  content: "";
  position: absolute;
  top: 1.75em;
  width: 0.7em;
  height: 0.38em;
  border-radius: 50%;
  background: rgba(225, 29, 72, 0.3);
  opacity: var(--blush);
  transition: opacity 0.35s ease;
}
.rad-mood-picker-face::before { left: 0.45em; }
.rad-mood-picker-face::after { right: 0.45em; }
.rad-mood-picker-face i {
  position: absolute;
  top: 1.2em;
  width: 0.42em;
  height: 0.42em;
  border-radius: 50%;
  background: #1f2937;
}
.rad-mood-picker-face i:nth-child(1) { left: 0.95em; }
.rad-mood-picker-face i:nth-child(2) { right: 0.95em; }
.rad-mood-picker-face b {
  position: absolute;
  top: 2em;
  left: 50%;
  width: 1.5em;
  height: var(--mouth);
  margin-left: -0.95em;
  border: 0.2em solid #1f2937;
  border-radius: 50%;
  clip-path: inset(50% 0 0 0);
  translate: 0 var(--drop);
  scale: 1 var(--flip);
  transition: height 0.45s cubic-bezier(0.34, 1.4, 0.64, 1), scale 0.4s cubic-bezier(0.65, 0, 0.35, 1), translate 0.4s ease;
}
.rad-mood-picker-options {
  display: flex;
  gap: 0.4em;
}
.rad-mood-picker label {
  position: relative;
  cursor: pointer;
}
.rad-mood-picker input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
  z-index: 1;
}
.rad-mood-picker input + span {
  display: block;
  padding: 0.4em 0.95em;
  border: 1px solid color-mix(in srgb, currentColor 18%, transparent);
  border-radius: 99em;
  font-size: 0.85em;
  font-weight: 600;
  transition: background-color 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}
.rad-mood-picker label:hover input:not(:checked) + span {
  border-color: var(--c);
}
.rad-mood-picker input:checked + span {
  border-color: var(--c);
  background: var(--c);
  color: #fff;
}
.rad-mood-picker input:focus-visible + span {
  outline: 0.12em solid var(--c);
  outline-offset: 0.15em;
}
/* Three identical keyframes: a new name replays the wobble on every change. */
@keyframes rad-mood-picker-wobble-a {
  0%, 100% { rotate: 0deg; scale: 1; }
  30% { rotate: -8deg; scale: 1.06; }
  60% { rotate: 5deg; }
}
@keyframes rad-mood-picker-wobble-b {
  0%, 100% { rotate: 0deg; scale: 1; }
  30% { rotate: -8deg; scale: 1.06; }
  60% { rotate: 5deg; }
}
@keyframes rad-mood-picker-wobble-c {
  0%, 100% { rotate: 0deg; scale: 1; }
  30% { rotate: -8deg; scale: 1.06; }
  60% { rotate: 5deg; }
}

@media (prefers-reduced-motion: reduce) {
  .rad-mood-picker, .rad-mood-picker *, .rad-mood-picker::before, .rad-mood-picker::after, .rad-mood-picker *::before, .rad-mood-picker *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

Customizing this snippet

  • Color: set --rad-color on the element or a parent. Currently previewing #3b82f6.
  • Size: set --rad-size. Every other dimension is in em, so the whole thing scales together. Currently previewing 18px.
  • Speed: change the duration on the transition or animation shorthand. 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.

Similar radio buttons