JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>html/cssだけで、MacのDockを、できる限り再現してみた</title>
</head>
<body>
  <ul>
    <li alt="Adobe Illustrator 2022">Ai</li>
    <li alt="Adobe Photoshop 2022">Ps</li>
    <li alt="Adobe Indesign 2022">Id</li>
    <li alt="Adobe XD 2022">Xd</li>
    <li alt="Adobe After Effects 2022">Ae</li>
    <li alt="Adobe Dimention 2022">Dn</li>
    <li alt="Adobe Premiere Pro 2022">Pr</li>
    <li alt="Adobe Lightroom 2022">Lr</li>
    <li alt="Adobe Bridge 2022">Br</li>
    <li alt="Adobe Animate 2022">An</li>
  </ul>
</body>
</html>

CSS

:root {
  --size: 5vw;
  --lot: 10;
  --margin: .5vw;
}
ul {
  display: flex;
  list-style: none;
  width: max-content;
  height: max-content;
  margin: auto;
  padding: 10px;
  justify-content: center; 
  background-color: #666;
  border-radius: 10px;
  transition: width .3s 0s ease;
  position: fixed;
  inset: 0;
}
li {
  display: grid;
  place-items: center;
  width: var(--size);
  height: var(--size);
  position: relative;
  background: #ccc;
  text-align: center;
  line-height: var(--size);
  cursor: default;
  user-select: none;
  color: #fff;
  transition-property: transform, margin;
  transition-duration: .3s;
  font-family: arial;
  font-size: 2.3vw;
  font-weight: bold;
  box-sizing: content-box;
  margin-inline: var(--margin);
  transform-origin: 50% 100%;
  border-radius: .5vw;
}
li:before {
  content: "";
  display: block;
  position: absolute;
  width: calc(100% + 1.2vw);
  height: 100%;
  left: -0.6vw;
}


/* tool tips */
li:after {
  display: none;
  content: attr(alt);
  position: absolute;
  white-space: nowrap;
  text-align: center;
  top: -25px;
  color: #fff;
  background-color: #626262;
  line-height: 1;
  border-radius: 3px;
  padding: 5px 10px;
  margin-inline: auto;
  font-size: .2vw;
  font-weight: normal;
  box-shadow: 0 0 0 1px #000 inset, 0 0 0 2px #797979 inset;
}
li:hover:after {
  display: block;
  transform: scale(0.8);
}


/* scale change */
li:hover {
  transform: scale(1.8);
  margin-inline: 3.5vw;
}
li:has(+li:hover),
li:hover +li {
  transform: scale(1.4);
}
li:has(+li +li:hover),
li:hover +li +li{
  transform: scale(1.3);
}
li:hover +li {
  margin-inline: var(--margin) 2vw;
}
li:hover +li +li{
  margin-inline: var(--margin) 1vw;
}
li:has(+li:hover) {
  margin-inline: 2vw var(--margin);
}
li:has(+li +li:hover){
  margin-inline: 1vw var(--margin);
}


/* color */
[alt="Adobe Illustrator 2022"] {
  background-color: #330000;
  color: #ff9a00;
}
[alt="Adobe Photoshop 2022"] {
  background-color: #001e36;
  color:...