<div class="buddywrapper">
  <input name="emotions" class="excited" id="excited" type="radio" checked>
  <label class="excited" for="excited">Excited</label>
  <input name="emotions" class="happy" id="happy" type="radio">
  <label class="happy" for="happy">Happy</label>
  <input name="emotions" class="sad" id="sad" type="radio">
  <label class="sad" for="sad">Sad</label>

  <button type="button" class="buddy">
    <span class="face">
      <svg viewBox="0 0 100 60">
        <ellipse cx="15" cy="12" rx="8" ry="9" class="eye right-eye" fill="currentColor" />
        <ellipse cx="80" cy="12" rx="8" ry="9" class="eye left-eye" fill="currentColor" />
        <path stroke-linecap="round" d="M30 40 c0 20, 40 20, 40 0" fill="currentColor" stroke="currentColor" />
        <!--  
      Uncomment to visualize the Bezier control points   
        <circle cx="30" cy="40" r="2.5" fill="red"/>
        <circle cx="40" cy="60" r="2.5" fill="red"/>
        <circle cx="60" cy="60" r="2.5" fill="red"/>
        <circle cx="70" cy="40" r="2.5" fill="red"/> 
      -->
      </svg>
    </span>
    Buddy
  </button>
</div>
<a href="https://buttonbuddy.dev">Visit ButtonBuddy.dev to create accessible button colors</a>
/* 
 * Visit ButtonBuddy.dev to create new colors for Buddy!
 *
 * Tutorial on animatating the SVG Face:
 * https://dev.to/5t3ph/how-to-create-an-animated-svg-face-with-css-5djd
 */

:root {
  --surface: #27272c;
  --background: #00a4b6;
  --color: #222222;
  --focus-background: #ffffff;
  --focus-color: #222222;
}

* {
  box-sizing: border-box;
}

/* Learn about button styling in my in-depth guide:
 * https://moderncss.dev/css-button-styling-guide/
 */
.buddy {
  /* Reset */
  border: none;
  background-color: transparent;
  font-family: inherit;
  font-size: 1.125rem;
  padding: 0;
  cursor: pointer;

  @media screen and (-ms-high-contrast: active) {
    border: 2px solid currentColor;
  }

  /* Core styles */
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--background);
  color: var(--color);
  border-radius: 0.15em;
  padding: 0.35em 0.75em 0.25em;
  font-size: clamp(3rem, 5vw, 4rem);
  text-align: center;
  line-height: 1;
  font-weight: 500;
  transition: 180ms all ease-in-out;
  grid-area: buddy;
  justify-self: center;

  &:focus {
    outline-style: solid;
    outline-color: transparent;
    background-color: var(--focus-background);
    color: var(--focus-color);
  }

  .face {
    width: 1em;
    height: 1em;
    margin-right: 0.25em;
    transform: translateY(-0.05em);

    svg {
      width: 100%;
      height: 100%;
      transform: rotate(-10deg);

      path {
        transition: all 180ms ease-in;
      }
    }
  }
}

svg.wink .left-eye {
  transform: scale(1);
  transform-origin: 90% 20%;
  animation: wink 480ms ease-in-out 1;
}

/* Curious how this is working?
 * Check out my guide to advanced CSS selectors:
 * https://moderncss.dev/guide-to-advanced-css-selectors-part-one/
 */
#happy:checked ~ button svg path,
#sad:checked ~ button svg path {
  fill: transparent;
  stroke-width: clamp(6px, 1vw, min(0.1em, 6px));
}

#sad:checked ~ button svg path {
  transform: scaleY(-1);
  transform-origin: 50% 80%;
}

@keyframes wink {
  0%,
  20%,
  70% {
    transform: scale(1.5, 0.25);
  }

  30%,
  50%,
  90%,
  100% {
    transform: scale(1);
  }
}

body {
  background-color: var(--surface);
  font-family: "Baloo 2", sans-serif;
  font-weight: 500;
  display: grid;
  place-content: center;
  justify-items: center;
  grid-gap: 2rem;
  min-height: 100vh;
  margin: 0;
  padding: 1rem;
  color: #fff;

  a {
    color: inherit;
  }
}

.buddywrapper {
  display: grid;
  grid-template-areas: "excited happy sad" "buddy buddy buddy";
  grid-gap: 1rem;
  place-content: center;
  align-items: center;
}

.excited {
  grid-area: excited;
}
.happy {
  grid-area: happy;
}
.sad {
  grid-area: sad;
}

label {
  margin-left: 1.5rem;
  margin-top: 0.15rem;
  font-size: 1.5rem;
}

a {
  max-width: 30ch;
  text-align: center;
  visibility: hidden;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}
View Compiled
const buddy = document.querySelector(".buddy svg");

// Only add the class if Buddy isn't sad
setInterval(() => {
  if (!document.querySelector("#sad:checked")) buddy.classList.add("wink");
}, 5000);

// Remove the wink class to reset the animation after it ends
buddy.addEventListener("animationend", () => {
  buddy.classList.remove("wink");
});
View Compiled

External CSS

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External JavaScript

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