:root {
  --pageBlack: #262626;
  --pageYellow: #ffd83e;
  --pagePurple: #552b55;
  --pageRed: #E1332d;
  --pageGreen: #2ce771;
  --pageGrey: #212121;


  

}
body {
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  font-family: verdana;
  background-color: var(--pageGrey);
}

a {
  text-decoration: none;
  text-transform: uppercase;
  font-size: 25px;
  color: darkgoldenrod;
  letter-spacing: 3px;
  padding: 25px 50px;
  border: 3px solid darkgoldenrod;
  transition: all 0.5s;
  position: relative;
  overflow: hidden;
/* 
  background-color: transparent;
  text-align: center;
  line-height: 60px;
  font-weight: bold; */
}

a:before, a:after,
span:before, span:after {
  content: '';
  position: absolute;
  width: 25%;
  height: 100%;
  background-color: aquamarine;
  z-index: -1;
  transition: all 0.3s;
}
a:before {
  top: 0;
  left: -25%;
  transition-delay: 0.2s;
}
a:hover:before {
  top: 0;
  left: 0;
}
a:after {
  top: -100%;
  left: 25%;
}
a:hover:after {
  top: 0;
}


a span:before {
  top: 100%;
  right: 25%;
  
  transition-delay: 0.3s;
}
a:hover span:before {
  top: 0;
}
a span:after {
  top: 0;
  right: -25%;
  transition-delay: 0.4s;
}
a:hover span:after {
  top: 0;
  right: 0;
}

a:hover {
  color:darkslategray;
}