<button class="radikalwp-btn-borderslide"><span>مشاهده نمونه‌کارها<//span><//button>

.radikalwp-btn-borderslide {
  position: relative;
  padding: 2px;
  border: none;
  background: transparent;
  border-radius: 14px;
  cursor: pointer;
  overflow: hidden;
}
.radikalwp-btn-borderslide::before {
  content: "";
  position: absolute;
  inset: -150%;
  background: conic-gradient(#4f46e5, #ec4899, #4f46e5);
  animation: radikalwp-borderslide-spin 3s linear infinite;
  opacity: 0;
  transition: opacity .3s ease;
}
.radikalwp-btn-borderslide:hover::before { opacity: 1; }
.radikalwp-btn-borderslide span {
  position: relative;
  display: inline-block;
  padding: 12px 32px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  color: #4f46e5;
  background: #fff;
  border-radius: 12.5px;
  transition: color .3s ease;
}
.radikalwp-btn-borderslide:hover span { color: #312e81; }
@keyframes radikalwp-borderslide-spin {
  to { transform: rotate(1turn); }
}