Webleb - fragmentos de código

HTML

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <title>
    Webleb
  </title>
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.3.0/css/all.min.css"
  integrity="sha512-SzlrxWUlpfuzQ+pcUCosxcglQRNAq/DZjVsC0lE40xsADsfeQoEypE+enwcOiGjk/bSuGGKHEyjSoQ1zVisanQ=="
  crossorigin="anonymous" referrerpolicy="no-referrer" />
  <link rel="stylesheet" href="/css/styles.css" />
</head>
<body style="display: flex; justify-content:center ; align-items: center;height: 100vh;overflow: hidden;">
  <div class="buttons">
    <button class="buttons__toggle"><i class="fa fa-share-alt"></i></button>
    <div class="allbtns">
      <a class="button" href="https://www.web-leb.com/code"><i class="fa-brands fa-facebook-f"></i>Facebook</a>
      <a class="button" href="https://www.web-leb.com/code"><i class="fa-brands fa-twitter"></i>Twitter</a>
      <a class="button" href="https://www.web-leb.com/code"><i class="fa-brands fa-instagram"></i>Instagram</a>
      <a class="button" href="https://www.web-leb.com/code"><i class="fa-brands fa-youtube"></i>YouTube</a>
      <a class="button" href="https://www.web-leb.com/code"><i class="fa-brands fa-tiktok"></i>TikTok</a>
      <a class="button" href="https://www.web-leb.com/code"><i class="fa-brands fa-linkedin-in"></i>LinkedIn</a>
    </div>
  </div>
  <script src="/js/main.js"></script>
</body>
</html>

CSS

html {
  -moz-osx-font-smoothing: grayscale;
  -webkit-font-smoothing: antialiased;
  box-sizing: border-box;
  font-size: 62.5%;
}
html * {
  box-sizing: inherit;
}
body {
  background: #0F2027;  /* fallback for old browsers */
  display: grid;
  font-family: sans-serif;
  font-size: 1.6rem;
  min-height: 100vh;
  place-content: center;
  position: relative;
}
body::before {
  content: '';
  height: 100%;
  left: 0;
  opacity: 0.8;
  position: absolute;
  top: 0;
  width: 100%;
  z-index: 0;
}
.buttons {
  position: relative;
  z-index: 1;
}
.buttons--active .allbtns {
  transform: translate(-50%, -50%) rotate(0deg);
}
.buttons--active .button:nth-child(1) {
  transform: translate(-110%, -150%) rotate(0deg);
}
.buttons--active .button:nth-child(2) {
  transform: translate(10%, -150%) rotate(0deg);
}
.buttons--active .button:nth-child(3) {
  transform: translate(65%, -50%) rotate(0deg);
}
.buttons--active .button:nth-child(4) {
  transform: translate(10%, 50%) rotate(0deg);
}
.buttons--active .button:nth-child(5) {
  transform: translate(-110%, 50%) rotate(0deg);
}
.buttons--active .button:nth-child(6) {
  transform: translate(-165%, -50%) rotate(0deg);
}
.buttons__toggle {
  appearance: none;
  align-items: center;
  background-color: #000;
  border: 4px solid #19182b;
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  display: flex;
  font-size: 0;
  height: 8rem;
  justify-content: center;
  text-decoration: none;
  width: 8rem;
  position: relative;
  z-index: 1;
}
.buttons__toggle:focus, .buttons__toggle--active {
  background-color: #16228b;
}
.buttons__toggle i {
  font-size: 3.2rem;
}
.allbtns {
  left: 50%;
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%) rotate(180deg);
  transform-origin: center;
  transition: transform 0.75s ease;
  z-index: 0;
}
.button {
  appearance: none;
  align-items: center;
  background-color: #000;
  border: 4px solid #19182b;
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  display: flex;
  font-size: 0;
  height: 8rem;
  justify-content: center;
  text-decoration: none;
  width: 8rem;
  left: 50%;
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%) rotate(180deg);
  transform-origin: center;
  transition: transform 0.2s ease;
}
.z:focus, .button--active {
  background-color: #16228b;
}
.button i {
  font-size: 3.2rem;
}
.button:nth-child(1) {
  transition-delay: calc(1 * 0.075s);
  z-index: calc(6 - 1);
}
.button:nth-child(2) {
  transition-delay: calc(2 * 0.075s);
  z-index: calc(6 - 2);
}
.button:nth-child(3) {
  transition-delay: calc(3 * 0.075s);
  z-index: calc(6 - 3);
}
.button:nth-child(4) {
  transition-delay: calc(4 * 0.075s);
  z-index: calc(6 - 4);
}
.button:nth-child(5) {
  transition-delay: calc(5 * 0.075s);
  z-index: calc(6 - 5);
}
.button:nth-child(6) {
  transition-delay: calc(6 * 0.075s);
  z-index: calc(6 - 6);
}

JS

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