@import url("https://fonts.googleapis.com/css?family=Poppins:200,300,400,500,600,700,800,900&display=swap");
* {
  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;
  overflow: hidden;
}

ul {
  position: relative;
}

ul li {
  list-style: none;
  text-align: center;
}

a {
  color: #333;
  text-decoration: none;
  font-size: 3em;
  padding: 5px 20px;
  display: inline-flex;
  font-weight: 700;
  transition: 0.5s;
}

ul:hover a {
  color: #0002;
}

ul li a:hover {
  color: #000;
  background: #fff;
}

a:before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: rgba(0, 0, 0, 0.1);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 5em;
  z-index: -1;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 500px;
  opacity: 0;
  transition: letter-spacing 0.5s;
  width: 100vw;
  height: 100vh;
}
a:hover:before {
  content: attr(data-text);
  opacity: 1;
  letter-spacing: 10px;
}

li:nth-child(1) a:before {
  background: #81ecec;
}

ul li:nth-child(2) a:before {
  background: #ff7675;
}
ul li:nth-child(3) a:before {
  background: #55efc4;
}
ul li:nth-child(4) a:before {
  background: #a29bfe;
}
ul li:nth-child(5) a:before {
  background: #fd79a8;
}