<button class="radikalwp-btn-fire">همین حالا بخر<//button>

.radikalwp-btn-fire {
  padding: 14px 34px;
  font-size: 16px;
  font-family: inherit;
  font-weight: 700;
  color: #fff;
  border: none;
  border-radius: 14px;
  cursor: pointer;
  background: linear-gradient(135deg, #ef4444 0%, #f97316 100%);
  box-shadow: 0 8px 20px rgba(239, 68, 68, .35);
  transition: transform .25s ease, box-shadow .25s ease;
}
.radikalwp-btn-fire:hover {
  transform: scale(1.05);
  box-shadow: 0 12px 30px rgba(249, 115, 22, .5);
}
.radikalwp-btn-fire:active { transform: scale(.98); }