%ul
  - 15.times do
    %li

ul {
  display: flex;
  flex-wrap: wrap;
  row-gap: 10px;
  margin: 0;
  padding: 0;
}

li {  
  box-sizing: border-box;
  width: 40px;
  height: 80px;
  background-image: linear-gradient(#ff9800, #ff9800);
  background-clip: padding-box;
  background-repeat: no-repeat;
  border: 2px solid #0000;
  transition: transform .7s cubic-bezier(0.16, 1, 0.3, 1), opacity .2s linear;
  transform-origin: center;  
  border-radius: 10px;
  cursor: pointer;
  list-style-type: none;
  opacity: 0.5;
}

li:has(+ li + li:hover) {
  transform: scaleY(1.1);
}

li:has(+ li:hover) {
  transform: scaleY(1.2);
}

li:hover {
  transform: scaleY(1.3);
  opacity: 1;
}

li:hover + li {
  transform: scaleY(1.2);
}

li:hover + li + li {
  transform: scaleY(1.1);
}

/* Demo style */
body {
  display: grid;
  place-items: center;
  box-sizing: border-box;
  min-height: 100vh;
  background-color: #f6eee3;
  background-size: 20px 20px;
  background-image:  repeating-linear-gradient(0deg, #e5decf, #e5decf 1px, #f6eee3 1px, #f6eee3);
  padding: 1rem;
  margin: 0;
}