<button class="radikalwp-btn-arrow"><span>بیشتر بدانید<//span><span class="radikalwp-btn-arrow-ic">&#8592;<//span><//button>

.radikalwp-btn-arrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 26px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: #111827;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: background .3s ease;
}
.radikalwp-btn-arrow:hover { background: #312e81; }
.radikalwp-btn-arrow-ic {
  display: inline-block;
  transition: transform .3s ease;
}
.radikalwp-btn-arrow:hover .radikalwp-btn-arrow-ic { transform: translateX(-6px); }