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HTML

              
                <svg viewBox="0 20 200 200" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" style="position:absolute;opacity:0" id="filters">
  <defs>
    <filter id="drawn">
      <feTurbulence baseFrequency="0.00325" numOctaves="8" />
      <feDisplacementMap in="SourceGraphic" scale="30" />
    </filter>
  </defs>
</svg>


<main>
  <section>
    <div class="group">
      <div>
        <svg viewBox="0 20 200 200" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
          <g class="drawable" fill="#ffffff" stroke="#000000" filter="url(#drawn)">
            <ellipse class="head" cx="100" cy="115" rx="80" ry="75" stroke-width="3.25" />
            <ellipse class="eye-right" cx="130" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-right" cx="114.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <ellipse class="eye-left" cx="65" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-left" cx="47.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <path class="mouth" d="M90,170 c0,15 20,15 20,0" transform="translate(0 -10)" stroke-width="3.25" />
          </g>
        </svg>
      </div>
      <div>
        <svg viewBox="0 20 200 200" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
          <g class="drawable" fill="#ffffff" stroke="#000000" filter="url(#drawn)">
            <ellipse class="head" cx="100" cy="115" rx="80" ry="75" stroke-width="3.25" />
            <ellipse class="eye-right" cx="130" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-right" cx="114.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <ellipse class="eye-left" cx="65" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-left" cx="47.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <path class="mouth" d="M90,170 c0,15 20,15 20,0" transform="translate(0 -10)" stroke-width="3.25" />
          </g>
        </svg>
      </div>
      <div>
        <svg viewBox="0 20 200 200" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
          <g class="drawable" fill="#ffffff" stroke="#000000" filter="url(#drawn)">
            <ellipse class="head" cx="100" cy="115" rx="80" ry="75" stroke-width="3.25" />
            <ellipse class="eye-right" cx="130" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-right" cx="114.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <ellipse class="eye-left" cx="65" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-left" cx="47.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <path class="mouth" d="M90,170 c0,15 20,15 20,0" transform="translate(0 -10)" stroke-width="3.25" />
          </g>
        </svg>
      </div>
      <div>
        <svg viewBox="0 20 200 200" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
          <g class="drawable" fill="#ffffff" stroke="#000000" filter="url(#drawn)">
            <ellipse class="head" cx="100" cy="115" rx="80" ry="75" stroke-width="3.25" />
            <ellipse class="eye-right" cx="130" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-right" cx="114.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <ellipse class="eye-left" cx="65" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-left" cx="47.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <path class="mouth" d="M90,170 c0,15 20,15 20,0" transform="translate(0 -10)" stroke-width="3.25" />
          </g>
        </svg>
      </div>
      <div>
        <svg viewBox="0 20 200 200" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
          <g class="drawable" fill="#ffffff" stroke="#000000" filter="url(#drawn)">
            <ellipse class="head" cx="100" cy="115" rx="80" ry="75" stroke-width="3.25" />
            <ellipse class="eye-right" cx="130" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-right" cx="114.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <ellipse class="eye-left" cx="65" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-left" cx="47.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <path class="mouth" d="M90,170 c0,15 20,15 20,0" transform="translate(0 -10)" stroke-width="3.25" />
          </g>
        </svg>
      </div>
      <div>
        <svg viewBox="0 20 200 200" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
          <g class="drawable" fill="#ffffff" stroke="#000000" filter="url(#drawn)">
            <ellipse class="head" cx="100" cy="115" rx="80" ry="75" stroke-width="3.25" />
            <ellipse class="eye-right" cx="130" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-right" cx="114.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <ellipse class="eye-left" cx="65" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-left" cx="47.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <path class="mouth" d="M90,170 c0,15 20,15 20,0" transform="translate(0 -10)" stroke-width="3.25" />
          </g>
        </svg>
      </div>
      <div>
        <svg viewBox="0 20 200 200" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
          <g class="drawable" fill="#ffffff" stroke="#000000" filter="url(#drawn)">
            <ellipse class="head" cx="100" cy="115" rx="80" ry="75" stroke-width="3.25" />
            <ellipse class="eye-right" cx="130" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-right" cx="114.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <ellipse class="eye-left" cx="65" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-left" cx="47.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <path class="mouth" d="M90,170 c0,15 20,15 20,0" transform="translate(0 -10)" stroke-width="3.25" />
          </g>
        </svg>
      </div>
      <div>
        <svg viewBox="0 20 200 200" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
          <g class="drawable" fill="#ffffff" stroke="#000000" filter="url(#drawn)">
            <ellipse class="head" cx="100" cy="115" rx="80" ry="75" stroke-width="3.25" />
            <ellipse class="eye-right" cx="130" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-right" cx="114.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <ellipse class="eye-left" cx="65" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-left" cx="47.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <path class="mouth" d="M90,170 c0,15 20,15 20,0" transform="translate(0 -10)" stroke-width="3.25" />
          </g>
        </svg>
      </div>
      <div>
        <svg viewBox="0 20 200 200" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
          <g class="drawable" fill="#ffffff" stroke="#000000" filter="url(#drawn)">
            <ellipse class="head" cx="100" cy="115" rx="80" ry="75" stroke-width="3.25" />
            <ellipse class="eye-right" cx="130" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-right" cx="114.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <ellipse class="eye-left" cx="65" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-left" cx="47.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <path class="mouth" d="M90,170 c0,15 20,15 20,0" transform="translate(0 -10)" stroke-width="3.25" />
          </g>
        </svg>
      </div>
      <div>
        <svg viewBox="0 20 200 200" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
          <g class="drawable" fill="#ffffff" stroke="#000000" filter="url(#drawn)">
            <ellipse class="head" cx="100" cy="115" rx="80" ry="75" stroke-width="3.25" />
            <ellipse class="eye-right" cx="130" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-right" cx="114.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <ellipse class="eye-left" cx="65" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-left" cx="47.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <path class="mouth" d="M90,170 c0,15 20,15 20,0" transform="translate(0 -10)" stroke-width="3.25" />
          </g>
        </svg>
      </div>
      <div>
        <svg viewBox="0 20 200 200" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
          <g class="drawable" fill="#ffffff" stroke="#000000" filter="url(#drawn)">
            <ellipse class="head" cx="100" cy="115" rx="80" ry="75" stroke-width="3.25" />
            <ellipse class="eye-right" cx="130" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-right" cx="114.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <ellipse class="eye-left" cx="65" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-left" cx="47.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <path class="mouth" d="M90,170 c0,15 20,15 20,0" transform="translate(0 -10)" stroke-width="3.25" />
          </g>
        </svg>
      </div>
      <div>
        <svg viewBox="0 20 200 200" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
          <g class="drawable" fill="#ffffff" stroke="#000000" filter="url(#drawn)">
            <ellipse class="head" cx="100" cy="115" rx="80" ry="75" stroke-width="3.25" />
            <ellipse class="eye-right" cx="130" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-right" cx="114.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <ellipse class="eye-left" cx="65" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-left" cx="47.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <path class="mouth" d="M90,170 c0,15 20,15 20,0" transform="translate(0 -10)" stroke-width="3.25" />
          </g>
        </svg>
      </div>
      <div>
        <svg viewBox="0 20 200 200" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
          <g class="drawable" fill="#ffffff" stroke="#000000" filter="url(#drawn)">
            <ellipse class="head" cx="100" cy="115" rx="80" ry="75" stroke-width="3.25" />
            <ellipse class="eye-right" cx="130" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-right" cx="114.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <ellipse class="eye-left" cx="65" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-left" cx="47.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <path class="mouth" d="M90,170 c0,15 20,15 20,0" transform="translate(0 -10)" stroke-width="3.25" />
          </g>
        </svg>
      </div>
      <div>
        <svg viewBox="0 20 200 200" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
          <g class="drawable" fill="#ffffff" stroke="#000000" filter="url(#drawn)">
            <ellipse class="head" cx="100" cy="115" rx="80" ry="75" stroke-width="3.25" />
            <ellipse class="eye-right" cx="130" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-right" cx="114.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <ellipse class="eye-left" cx="65" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-left" cx="47.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <path class="mouth" d="M90,170 c0,15 20,15 20,0" transform="translate(0 -10)" stroke-width="3.25" />
          </g>
        </svg>
      </div>
      <div>
        <svg viewBox="0 20 200 200" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
          <g class="drawable" fill="#ffffff" stroke="#000000" filter="url(#drawn)">
            <ellipse class="head" cx="100" cy="115" rx="80" ry="75" stroke-width="3.25" />
            <ellipse class="eye-right" cx="130" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-right" cx="114.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <ellipse class="eye-left" cx="65" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-left" cx="47.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <path class="mouth" d="M90,170 c0,15 20,15 20,0" transform="translate(0 -10)" stroke-width="3.25" />
          </g>
        </svg>
      </div>
      <div>
        <svg viewBox="0 20 200 200" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
          <g class="drawable" fill="#ffffff" stroke="#000000" filter="url(#drawn)">
            <ellipse class="head" cx="100" cy="115" rx="80" ry="75" stroke-width="3.25" />
            <ellipse class="eye-right" cx="130" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-right" cx="114.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <ellipse class="eye-left" cx="65" cy="106" rx="30" ry="35" stroke-width="3.25" />
            <ellipse class="pupil-left" cx="47.5" cy="106" rx="1" ry="1.5" stroke-width="3.25" />
            <path class="mouth" d="M90,170 c0,15 20,15 20,0" transform="translate(0 -10)" stroke-width="3.25" />
          </g>
        </svg>
      </div>
    </div>
    <div class="framer"></div>
  </section>
</main>
<aside></aside>
<form>
  <p>
    <select id="easing">
      <option value="linear">linear</option>
      <option id="start" value="steps(var(--step-count), start)">steps(16,start)</option> 
      <option id="end" value="steps(var(--step-count), end)">steps(16,end)</option> 
      <option id="jump-start" value="steps(var(--step-count), jump-start)">steps(16,jump-start)</option> 
      <option id="jump-end" value="steps(var(--step-count), jump-end)" selected>steps(16,jump-end)</option> 
      <option id="jump-none" value="steps(var(--step-count), jump-none)">steps(16,jump-none)</option> 
      <option id="jump-both" value="steps(var(--step-count), jump-both)">steps(16,jump-both)</option> 
    </select>
    <label for="easing">Easing</label>
  </p>
  <p>
    <input type="number" value="10000" id="duration" />
    <label for="duration">Duration (ms)</label>
  </p>
  <p>
    <select id="direction">
      <option value="normal">normal</option> 
      <option value="alternate">alternate</option> 
      <option value="reverse">reverse</option> 
      <option value="alternate-reverse">alternate-reverse</option> 
    </select>
    <label for="direction">Direction</label>
  </p>
</form>
<p id="rule"></p>
<footer>This browser does not yet support the newest <code>steps()</code> options: <code>jump-start</code>, <code>jump-end</code>, <code>jump-both</code>, and <code>jump-none</code>. To see the new easing options in action, try Firefox 65+.</footer>
              
            
!

CSS

              
                :root {
  --duration: 10000ms;
  --step-count: 16;
  --width: 12.5vw;
}
#filters {
  width: 0rem;
  height: 0rem;
  top: -10rem;
  left: -10rem;
}
section {
  position: relative;
  height: var(--width);
  width: calc(var(--step-count) * var(--width));
  margin-bottom: 3rem;
  transform: translateX(30vw);
}
section::before,
section::after {
  content: '';
  position: absolute;
  top: 0;
  left: calc(-50vw + 1px);
  width: 50vw;
  bottom: 0;
}
section::after {
  background: rgba(0,0,0,.7);
  z-index: 1;
}
.group {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  will-change: transform;
  animation: move var(--duration) infinite var(--direction, normal) var(--easing, steps(var(--step-count), jump-end));
  background: hsl(343, 100%, 55%);
  
  counter-reset: framed;
}
.group > div {
  width: var(--width);
  display: flex;
  position: relative;
}
.group > div::before {
  counter-increment: framed;
  content: counter(framed);
  position: absolute;
  top: .5rem;
  left: .5rem;
}
.framer {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background: rgba(0,0,0,.75);
  clip-path: polygon(
    0% 0%,
    6.25vw 0%,
    6.25vw 5%,
    0% 5%,
    0% 95%,
    12.5vw 95%,
    12.5vw 5%,
    6.25vw 5%,
    6.25vw 0%,
    100% 0%,
    100% 100%,
    0% 100%
  );
}
@keyframes move {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-100%);
  }
}







div svg {
  width: 100%;
  margin: auto;
}
.head {
  fill: hsla(0,0%,90%, .8);
}
[class*=eye] {
  fill: hsla(0,0%,90%,.4);
}
[class*=pupil] {
  stroke-width: 6.5px;
  fill: #222;
}
.mouth {
  fill: none;
}

section {
  position: relative;
}

@keyframes spin {
  0% {
    transform: rotate(0deg) translateY(-2rem);
  }
  100% {
    transform: rotate(360deg) translateY(-2rem);
  }
}
@keyframes move-right {
  0% {
    transform: translateX(-10rem);
  }
  100% {
    transform: translateX(10rem);
  }
}
@keyframes color {
  0% {
    filter: hue-rotate(0deg);
  }
  100% {
    filter: hue-rotate(360deg);
  }
}

main {
  align-self: flex-start;
}

body {
  min-height: 100vh;
  padding: 6rem 1rem 3rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  overflow-x: hidden;
  font-family: var(--fonts);
  --fonts: system-ui, -apple-system, 'Segoe UI', sans-serif;
  color: #51515c;
  color: #f1f1fc;
  background: radial-gradient(circle, hsl(343, 100%, 8%) 70%, hsl(343, 100%, 2%))
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}


aside {
  height: 1.2rem;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  border-bottom: 3px double hsla(0,0%,70%,.5);
  background: rgba(0,0,0,.76);
}
aside::after {
  content: '';
  position: absolute;
  top: .1rem;
  right: 0;
  bottom: .2rem;
  left: 0;
  background: hsl(163, 100%, 40%);
  animation: progress var(--duration) 0ms infinite linear;
  opacity: .6;
  transform: scaleX(0);
  transform-origin: 0% 50%;
}

@keyframes progress {
  100% {
    transform: scaleX(1);
  }
}
form {
  display: grid;
  grid-gap: 2em 1em;
  gap: 2em 1em;
  grid-template-columns: repeat(auto-fill, minmax(11rem, 1fr));
  width: 100%;
  max-width: 35rem;
}
form p {
  display: flex;
  flex-direction: column-reverse;
}
form label {
  margin-bottom: .5em;
}
select, input {
	-moz-appearance: none;
	-webkit-appearance: none;
	appearance: none;
  
	display: block;
  width: 100%;
	font-size: 16px;
	font-weight: 500;
  color: #444;
	line-height: 1.3;
	padding: .6em .4em .5em .4em;
	border: 1px solid #ccd;
	box-shadow: 0 1px 0 1px rgba(0,0,0,.04);
	border-radius: .25em;
	background-image: var(--top-background, none),
	  linear-gradient(to bottom, rgba(255,255,255,.8) 0%, rgba(245,245,255,.8) 100%);
	background-repeat: no-repeat, repeat;
	background-position: right .7em top 50%, 0 0;
	background-size: .65em auto, 100%;
}
[disabled],
[disabled] + label {
  opacity: .6;
}
select {
  font-family: var(--fonts);
  padding-right: 1.6em;
  --top-background: url('data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23667CB2%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E');
}
select::-ms-expand {
	display: none;
}
select:hover,
input:hover {
	border-color: #778;
}
select:focus,
input:focus {
	border-color: #ccd;
	box-shadow: 0 0 1px 3px hsla(163, 100%, 40%, .6);
	color: #222; 
	outline: none;
}
select option {
	font-weight: normal;
}

#rule {
  margin: 3rem;
  font-family: monospace;
  font-size: 1.6em;
  line-height: 1.4;
  width: 100%;
  max-width: 64rem;
  word-break: keep-all;
  text-indent: -2rem;
  padding-left: 2rem;
}

footer {
  line-height: 1.4;
  width: 100%;
  max-width: 64rem;
}
footer code {
  font-size: 1.2em;
}

#jump-none,
#jump-both,
#jump-end,
#jump-start {
  display: none;
}

@supports (animation-timing-function: steps(2, jump-both)) {
  #jump-both {
    display: flex;
  }
  footer {
    display: none;
  }
}

@supports (animation-timing-function: steps(2, jump-none)) {
  #jump-none {
    display: flex;
  }
  footer {
    display: none;
  }
}

@supports (animation-timing-function: steps(2, jump-start)) {
  #jump-start {
    display: flex;
  }
  #start {
    display: none;
  }
}

@supports (animation-timing-function: steps(2, jump-end)) {
  #jump-end {
    display: flex;
  }
  #end {
    display: none;
  }
}



              
            
!

JS

              
                //This JS is just to move the pupils back and forth

let frames = Array.from(document.querySelectorAll('main > div'));
let svgs = Array.from(document.querySelectorAll('svg:not(#filters)'));
let leftStart = 47.5;
let rightStart = 114.5;
let step = 68 / svgs.length;

frames.forEach((frame, i) => {
  frame.style.setProperty('--rotate', `${i * 360 / frames.length}deg`)
})

for (let i = 0, l = svgs.length; i < l / 2; ++i) {
  let image1 = svgs[i];
  let image2 = svgs[l - i - 1];
  let diff = i * step;
  
  let left1 = image1.querySelector('.pupil-left');
  let right1 = image1.querySelector('.pupil-right');
  let left2 = image2.querySelector('.pupil-left');
  let right2 = image2.querySelector('.pupil-right');
  
  [left1,left2].forEach(left => { left.setAttribute('cx', '' + (leftStart + diff)) });
  [right1,right2].forEach(right => {right.setAttribute('cx', '' + (rightStart + diff))});
}







const options = document.querySelectorAll('input, select');
const progress = document.querySelector('aside');
const stepper = document.querySelector('.group');
const docStyle = document.documentElement.style;

const rule = document.getElementById('rule');
const duration = document.getElementById('duration');
const direction = document.getElementById('direction');

setGuides(16);
updateRule(true);

options.forEach(el => {
  el.addEventListener('change', e => {
    let value = e.currentTarget.value;
    if (e.currentTarget.id === 'duration') {
      value = value + 'ms';
    }
    if (e.currentTarget.id === 'step-count') {
      setGuides(value);
      if (document.documentElement.classList.contains('side-by-side')) {
        updateLabels(value); 
      }
    }
    docStyle.setProperty(`--${e.currentTarget.id}`, value);
    updateRule();
  });
});

function setGuides(count) {
  let images = [];
  for (let i = 0; i < count; ++i) {
    images.push(`linear-gradient(
      to right,
      hsla(0,0%,70%,0) ${i / count * 100}%,
      hsla(0,0%,70%,.5) ${i / count * 100}%,
      hsla(0,0%,70%,.5) calc(${i / count * 100}% + 2px),
      hsla(0,0%,70%,0) calc(${i / count * 100}% + 2px))`)
  }
  progress.style.backgroundImage = images.join(',');
}

function updateRule(initial) {
  const s = window.getComputedStyle(stepper);
  rule.textContent = `animation: go ${s.animationDuration} infinite ${s.animationDirection} ${s.animationTimingFunction.replace(' ','')}`;
  if (initial && s.animationTimingFunction === 'ease') {
    document.getElementById('end').setAttribute('selected','selected');
    docStyle.setProperty('--easing', document.getElementById('end').value);
    updateRule();
  }
}

const countLabels = document.querySelectorAll('.count-label');
function updateLabels(value) {
   countLabels.forEach(label => {
     label.textContent = value;
   });
}
              
            
!
999px

Console