<button class="radikalwp-btn-neon">کاوش کنید<//button>

.radikalwp-btn-neon {
  padding: 12px 30px;
  font-size: 16px;
  font-family: inherit;
  color: #22d3ee;
  background: transparent;
  border: 2px solid #22d3ee;
  border-radius: 10px;
  cursor: pointer;
  transition: all .3s ease;
  box-shadow: 0 0 8px rgba(34, 211, 238, .4), inset 0 0 8px rgba(34, 211, 238, .15);
}
.radikalwp-btn-neon:hover {
  color: #06121a;
  background: #22d3ee;
  box-shadow: 0 0 24px rgba(34, 211, 238, .8), 0 0 48px rgba(34, 211, 238, .4);
}