<button class="radikalwp-btn-glass">دریافت اپلیکیشن<//button>

.radikalwp-btn-glass {
  padding: 13px 36px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  background: rgba(255, 255, 255, .14);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, .35);
  border-radius: 999px;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .12);
  transition: background .3s ease, border-color .3s ease;
}
.radikalwp-btn-glass:hover {
  background: rgba(255, 255, 255, .24);
  border-color: rgba(255, 255, 255, .55);
}