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HTML 

              
                <main class="wrapper">
  <div class="row">
    <css-person></css-person>
    <css-person></css-person>
    <css-person></css-person>
    <css-person></css-person>
    <css-person></css-person>
    <css-person></css-person>
  </div>
</main>
<div class="info">
  <p>
    <a href="https://muffinman.io/blog/css-blocky-people-making-waves/" target="_blank">Read the blog post</a>
  </p>
  <p>
    For performance reasons this animation is best viewed in Safari. To add a
    blocky person <button class="add-more-button">click here</button>.
  </p>

  <div class="country-select">
    <div class="title">World Cup bonus:</div>
    <label>
      <input type="radio" name="country" value="random" checked> Random colors
    </label>
    <label>
      <input type="radio" name="country" value="brazil"> Brazil
    </label>
    <label>
      <input type="radio" name="country" value="denmark"> Denmark
    </label>
    <label>
      <input type="radio" name="country" value="netherlands"> Netherlands
    </label>
    <label>
      <input type="radio" name="country" value="serbia"> Serbia
    </label>
    <label>
      <input type="radio" name="country" value="usa"> USA
    </label>
  </div>
</div>
!

CSS 

              
                *,
*::after,
*::before {
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial,
    sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji';
}

html,
body {
  width: 100%;
  overflow-x: hidden;
}

html {
  font-size: 1px;
}

@media (min-width: 600px) {
  html {
    font-size: 1.5px;
  }
}

@media (min-width: 1000px) {
  html {
    font-size: 2px;
  }
}

@media (min-width: 1400px) {
  html {
    font-size: 3px;
  }
}

body {
  line-height: 1.4em;
  text-align: center;
  background-color: #6c86a0;
  color: #fff;
  font-size: 16px;
  padding: 100rem 20px 100rem;
}

.wrapper {
  transform-style: preserve-3d;
  transform: rotateY(60deg) rotateX(5deg);
  margin-bottom: 50px;

  * {
    transform-style: preserve-3d;
  }
}

.info {
  max-width: 400px;
  margin: 0 auto;
}

p {
  margin-bottom: 15px;
}

.country-select label {
  display: block;
}

.title {
  font-weight: bold;
  margin-bottom: 5px;
}

a,
button {
  color: #fff;
  background: none;
  padding: 0;
  border: none;
  text-decoration: underline;
  font-size: 16px;
  cursor: pointer;
  transition: color 300ms, border-color 300ms;

  &:hover {
    color: #78d9bd;
    border-bottom-color: #78d9bd;
  }
}

// -------- BOX

css-box {
  display: block;
  position: relative;

  > div {
    position: absolute;
    border: 1rem solid rgba(black, 0.2);
    background: white;
    backface-visibility: hidden;
  }
}

@mixin box($width, $height, $depth) {
  width: $width;
  height: $height;

  .left,
  .right {
    width: $depth;
    height: $height;
  }

  .front,
  .back {
    width: $width;
    height: $height;
  }

  .top,
  .bottom {
    width: $width;
    height: $depth;
  }

  .front {
    transform: translateZ($depth / 2);
  }

  .back {
    transform: translateZ($depth / -2) rotateY(180deg);
  }

  .left {
    transform: translateX($depth / -2) rotateY(270deg);
  }

  .right {
    transform: translateX($width - $depth / 2) rotateY(90deg);
  }

  .top {
    transform: translateY($depth / -2) rotateX(90deg);
  }

  .bottom {
    transform: translateY($height - $depth / 2) rotateX(-90deg);
  }
}

$time: 3s;

// ------------- ROW

.row {
  display: flex;
  justify-content: center;
  width: 500vw;
  margin-left: -200vw;
}

// ------------- PERSON

css-person {
  display: flex;
  flex-wrap: wrap;
  width: 54rem;
  margin-right: 12rem;
}

$tshirt-colors: #9b59b7, #1abc9d, #e74c3c, #f1c40f, #3498db, #e67e22, #34495e;
$shoes-colors: #2b071f, #ffe600, #345, #ecf0f1, #0abde3, #6c5ce7;
$pants-colors: #1e3799, #198066, #510b6d, #2c3e50, #d35400, #95a5a6;
$skin-colors: #d8b997, #bb9472, #966946, #473a30;

@for $i from 1 through 30 {
  css-person:nth-child(#{$i}) {
    &,
    & * {
      animation-delay: $i * 0.3s;
    }

    $tshirt-color: nth($tshirt-colors, random(length($tshirt-colors)));
    $shoes-color: nth($shoes-colors, random(length($shoes-colors)));
    $pants-color: nth($pants-colors, random(length($pants-colors)));
    $skin-color: nth($skin-colors, random(length($skin-colors)));

    .head *,
    .arm-bottom * {
      background: $skin-color;
    }

    .torso *,
    .arm-top * {
      background: $tshirt-color;
    }

    .leg-top *,
    .leg-bottom * {
      background-color: $pants-color;
    }

    .leg-shoe * {
      background-color: $shoes-color;
    }
  }
}

// ------------- TOP

@keyframes person-top {
  0% {
    transform: translateZ(-7rem) translateY(-15rem) rotateX(-5deg);
  }
  50% {
    transform: translateZ(16rem) translateY(-33rem) rotateX(0deg);
  }
}

.person-top {
  display: flex;
  flex-wrap: wrap;
  transform: translateZ(-7rem) translateY(-15rem) rotateX(-5deg);
  animation: person-top $time ease-in-out infinite;
}

// ------------- HEAD

.head-wrapper {
  flex-basis: 100%;
  margin-bottom: 2rem;
}

@keyframes head {
  0% {
    transform: rotateX(3deg);
  }
  50% {
    transform: rotateX(7deg);
  }
}

.head {
  @include box(15rem, 20rem, 15rem);
  margin: 0 auto;
  transform: rotateX(3deg);
  animation: head $time ease-in-out infinite;
}

// ------------- TORSO

.torso {
  @include box(30rem, 45rem, 15rem);
  margin: 0 2rem;
  position: relative;
  z-index: 100;
}

// ------------- ARMS

@keyframes arm {
  0% {
    transform: translateZ(-4rem) rotateX(60deg);
  }
  50% {
    transform: translateZ(-4rem) rotateX(150deg);
  }
}

.arm {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  transform-origin: top center;
  transform: translateZ(-4rem) rotateX(60deg);
  animation: arm $time ease-in-out infinite;
  margin-top: 10rem;
}

@keyframes arm-top {
  0% {
    transform: rotateX(-40deg);
  }
  50% {
    transform: rotateX(0deg);
  }
}

.arm-top {
  @include box(10rem, 30rem, 10rem);
  transform: rotateX(-40deg);
  animation: arm-top $time ease-in-out infinite;
  position: relative;
  z-index: 50;
}

@keyframes arm-bottom {
  0% {
    transform: rotateX(40deg);
  }
  50% {
    transform: rotateX(0deg) translateZ(0rem);
  }
}

.arm-bottom {
  @include box(9rem, 30rem, 9rem);
  margin-top: -4rem;
  transform: rotateX(40deg);
  animation: arm-bottom $time ease-in-out infinite;
}

// ------------- LEGS

.legs {
  flex-basis: 100%;
  display: flex;
  justify-content: center;
  margin-top: -18rem;
  transform: translateZ(18rem) translateY(-14rem);
}

.leg {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.leg-left {
  margin-right: 2rem;
}

@keyframes leg-top {
  0% {
    transform: translateZ(-15rem) rotateX(-10deg);
  }
  50% {
    transform: translateZ(-6rem) translateY(-15rem) rotateX(-88deg);
  }
}

.leg-top {
  @include box(12rem, 12rem, 40rem);
  transform-origin: bottom center;
  transform: translateZ(-15rem) rotateX(-10deg);
  animation: leg-top $time ease-in-out infinite;
  position: relative;
  z-index: 50;
}

@keyframes leg-bottom {
  0% {
    transform: rotateX(-15deg);
  }
  50% {
    transform: rotateX(-2deg) translateY(-2rem);
  }
}

.leg-bottom {
  @include box(10rem, 30rem, 10rem);
  transform: rotateX(-15deg);
  animation: leg-bottom $time ease-in-out infinite;
}

@keyframes leg-shoe {
  0% {
    transform: translateZ(3rem);
  }
  50% {
    transform: translateZ(3rem) translateY(-2rem) rotateX(-15deg);
  }
}

.leg-shoe {
  @include box(11rem, 8rem, 20rem);
  animation: leg-shoe $time ease-in-out infinite;
  transform: translateZ(3rem);
}


// ------- BONUS - World cup fans

@mixin fan($tshirt-color, $pants-color) {
  $shoes-color: nth($shoes-colors, random(length($shoes-colors)));
  $skin-color: nth($skin-colors, random(length($skin-colors)));

  .head *,
  .arm-bottom * {
    background: $skin-color;
  }

  .torso *,
  .arm-top * {
    background: $tshirt-color;
  }

  .leg-top * {
    background-color: $pants-color;
  }

  .leg-bottom * {
    background-color: $skin-color;
  }

  .leg-shoe * {
    background-color: $shoes-color;
  }
}

@for $i from 1 through 30 {
  css-person:nth-child(#{$i}).serbia {
    @include fan(#c21f19, #b9140e);
  }

  css-person:nth-child(#{$i}).denmark {
    @include fan(#aa2d29, #f2f3f3);
  }

  css-person:nth-child(#{$i}).usa {
    @include fan(#f2f3f3, #2e3660);
  }

  css-person:nth-child(#{$i}).brazil {
    @include fan(#eac856, #2e5cd7);
  }
  
  css-person:nth-child(#{$i}).netherlands {
    @include fan(#ea6f2d, #f2f3f3);
  }
}
!

JS 

              
                class Box extends HTMLElement {
  constructor() {
    super();

    this.innerHTML = `<div class="front"></div>
      <div class="back"></div>
      <div class="right"></div>
      <div class="left"></div>
      <div class="bottom"></div>
      <div class="top"></div>`;
  }
}

window.customElements.define("css-box", Box);

class Person extends HTMLElement {
  constructor() {
    super();

    this.innerHTML = `<div class="person-top">
      <div class="head-wrapper">
        <css-box class="head"></css-box>
      </div>
      <div class="arm">
        <css-box class="arm-top"></css-box>
        <css-box class="arm-bottom"></css-box>
      </div>
      <css-box class="torso"></css-box>
      <div class="arm arm-right">
        <css-box class="arm-top"></css-box>
        <css-box class="arm-bottom"></css-box>
      </div>
    </div>
    <div class="legs">
      <div class="leg leg-left">
        <css-box class="leg-top"></css-box>
        <css-box class="leg-bottom"></css-box>
        <css-box class="leg-shoe"></css-box>
      </div>
      <div class="leg leg-right">
        <css-box class="leg-top"></css-box>
        <css-box class="leg-bottom"></css-box>
        <css-box class="leg-shoe"></css-box>
      </div>
    </div>`;
  }
}

window.customElements.define("css-person", Person);

const addMoreButton = document.querySelector(".add-more-button");
const row = document.querySelector(".row");

addMoreButton.addEventListener("click", () => {
  if (document.querySelectorAll("css-person").length >= 30) {
    return;
  }
  
  const selectedCountry = document.querySelector('input[name=country]:checked').value;
  row.innerHTML += `<css-person class="${selectedCountry}"></css-person>`;
});

// Add more people on safari
const ua = navigator.userAgent.toLowerCase();

if (ua.indexOf("safari") > -1) {
  if (ua.indexOf("chrome") > -1) {
    // Chrome
  } else {
    row.innerHTML += `<css-person></css-person>
    <css-person></css-person>
    <css-person></css-person>
    <css-person></css-person>
    <css-person></css-person>
    <css-person></css-person>`;
  }
}

// -------- For debug purposes -------- //

// const wrapper = document.querySelector('.wrapper');

// window.addEventListener('mousemove', (e) => {
//   wrapper.style.transform = `rotateY(${
//     (e.clientX / window.innerWidth) * 360
//   }deg) rotateX(5deg)`;
// });

// -------- BONUS - World cup fans -------- //


const countryInputs = document.querySelectorAll('input[name=country]');

// Update colors on refresh if needed
const fans = document.querySelectorAll('css-person');
const selectedCountry = document.querySelector('input[name=country]:checked').value;

fans.forEach(function (fan) {
  fan.className = selectedCountry;
});

// Update colors on radio input change
countryInputs.forEach((input) => {
  input.addEventListener('change', function(e) {
    const fans = document.querySelectorAll('css-person');
    
    fans.forEach(function (fan) {
      fan.className = e.target.value;
    });
  });
});
!
999px

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