body {
  background-color: black;
}

.button {
  background: rgb(128,0,128);
  background: linear-gradient(90deg, rgba(128,0,128,1) 0%, rgba(64,224,208,1) 100%);
  border: none;
  color: white;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  transition-duration: 0.4s;
  cursor: pointer;
}

.button:hover {
  background: rgb(64,224,208);
  background: linear-gradient(90deg, rgba(64,224,208,1) 0%, rgba(128,0,