body {
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  font-family: sans-serif;
}

ul {
  margin: 0;
  padding: 0;
  display: flex;
}

ul li {
  list-style-type: none;
  font-size: 80px;
  letter-spacing: 20px;
  animation: loading 3s linear infinite;
}

@keyframes loading {
  0% {
    color: red;
    transform: translateX(-50px);
    letter-spacing: 20px;
    opacity: 0;
  }

  10% {
    opacity: 1;
  }

  50% {
    letter-spacing: -20px;
    opacity: 1;
  }

  100% {
    color: blue;
    transform: translateX(50px);
    letter-spacing: 20px;
    opacity: 0;
  }
}

ul li:nth-child(1) {
  animation-delay: 0s;
}

ul li:nth-child(2) {
  animation-delay: 0.2s;
}

ul li:nth-child(3) {
  animation-delay: 0.4s;
}

ul li:nth-child(4) {
  animation-delay: 0.6s;
}

ul li:nth-child(5) {
  animation-delay: 0.8s;
}

ul li:nth-child(6) {
  animation-delay: 1s;
}

ul li:nth-child(7) {
  animation-delay: 1.2s;
}