:root {
  --pageGrey: #212121;
  --lightBlue: #acc0ce;
  --pagePurple: #946E83;
  --pagePink: #fff0fb;
  --pageYellow: #fadf72;
  
  --darkBlue: #42565d;
  --pageGreen: #5f9774;
  --lightGreen: #8ed29c;
  --shadowBlue: #edfff4;
  --grey: #a2a2a2;
}

body {
  margin: 0;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
  background-color: var(--darkBlue);
}
ul {
  margin: 0;
  padding: 0;
  display: flex;
}
ul li {
  list-style: none;
  color: var(--pageGrey);
  font-size: 80px;
  letter-spacing: 15px;
  animation: lighting 1.4s linear 3;
}

@keyframes lighting {
  0% {color: var(--pageGrey);
    text-shadow: none;
  }
  90% {color: var(--pageGrey);
    text-shadow: none;
  }
  100% { color: var(--pageYellow);
    text-shadow: 0 0 7px #fff900, 0 0 50px #ff6c00;
  }  
}
ul li:nth-child(1) {
  animation-delay: 0;
}
ul li:nth-child(2) {
  animation-delay: 0.1s;
}
ul li:nth-child(3) {
  animation-delay: 0.2s;
}
ul li:nth-child(4) {
  animation-delay: 0.3s;
}
ul li:nth-child(5) {
  animation-delay: 0.4s;
}
ul li:nth-child(6) {
  animation-delay: 0.5s;
}
ul li:nth-child(7) {
  animation-delay: 0.6s;
}
ul li:nth-child(8) {
  animation-delay: 0.7s;
}