Aurora

.btn-aurora {
  display: inline-block;
  padding: 13px 28px;
  border: none;
  border-radius: 12px;
  background: linear-gradient(120deg, #34d399, #22d3ee 50%, #818cf8);
  background-size: 200% auto;
  background-position: left center;
  color: #052e16;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: background-position 0.4s ease;
}
.btn-aurora:hover {
  background-position: right center;
}