@import url("https://fonts.googleapis.com/css?family=Poppins:100,200,300,400,500,600,700,800,900");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: #222327;
}

.navigation {
  position: relative;
  width: 450px;
  height: 80px;
  background: #2f2f2f;
  display: flex;
  justify-content: center;
  border-radius: 10px;
}

.navigation ul {
  position: relative;
  display: flex;
  width: 400px;
}

.navigation ul li {
  position: relative;
  list-style: none;
  width: 80px;
  height: 80px;
}

.navigation ul li a {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  width: 100%;
  text-align: center;
  font-weight: 500;
}

.navigation ul li a .icon {
  position: relative;
  display: block;
  line-height: 85px;
  font-size: 1.5em;
  transition: 0.5s;
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
}

.navigation ul li a:hover .icon {
  color: rgba(255, 255, 255, 1);
}

.navigation ul li.active a .icon {
  color: #29fd53;
  transform: translateY(-8px);
}

.navigation ul li a .text {
  position: absolute;
  font-weight: 600;
  font-size: 0.6em;
  color: #222327;
  text-transform: uppercase;
  transform: translateY(0px);
  letter-spacing: 0.05em;
  opacity: 0;
  z-index: 10;
}

.navigation ul li.active a .text {
  opacity: 1;
  transform: translateY(16px);
}

.indicator {
  position: absolute;
  width: 80px;
  height: 80px;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: 0.5s;
}

.indicator::before {
  content: "";
  position: absolute;
  bottom: 14px;
  width: 80%;
  height: 16px;
  background: #29fd53;
  border-radius: 10px;
}

.navigation ul li:nth-child(2).active ~ .indicator {
  transform: translateX(calc(80px * 1));
}

.navigation ul li:nth-child(3).active ~ .indicator {
  transform: translateX(calc(80px * 2));
}

.navigation ul li:nth-child(4).active ~ .indicator {
  transform: translateX(calc(80px * 3));
}

.navigation ul li:nth-child(5).active ~ .indicator {
  transform: translateX(calc(80px * 4));
}