:root {
  --pageBlack: #262626;
  --pageYellow: #fadf72;
  --pagePurple: #552b55;
  --pageRed: #814995;
  --pageGreen: #2ce771;
  --grey: #879c9b;
  --lightGreen: #47bc9f;
  --pageGrey: #212121;
  --lightBlue: #d7ecfa;
}
body {
  margin: 0;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: sans-serif;
  /* overflow: hidden; */
  background-color: var(--lightBlue);
}
ul {
  padding: 0;
  display: flex;
  /* flex-wrap: wrap; */
  list-style-type: none;
  /* border: solid thin black; */
}
li {
  padding: 10px 20px;
}
a {
  text-decoration: none;
  text-transform: uppercase;
  font-size: 20px;
  color: #222;
  position: relative;
}
ul li a:before {
  content: '';
  width: 0;
  height: 5px;
  background-color: var(--lightGreen);
  position: absolute;
  top: 120%;
  left: 0;
  transition: all 2s;
  transition-timing-function: ease-out;
}

ul li a:after {
  content: '';
  width: 0;
  height: 5px;
  background-color: var(--pageRed);
  position: absolute;
  top: 120%;
  right: 0;
  transition: all 2s;
}
ul li a:hover:before {
  width: 50%;
  transform: translateX(100%)
}
ul li a:hover:after {
  width: 50%;
  transform: translateX(-100%)
}