<button class="radikalwp-btn-skew"><span>عضویت<//span><//button>

.radikalwp-btn-skew {
  position: relative;
  padding: 0;
  font-family: inherit;
  border: 2px solid #0ea5e9;
  border-radius: 10px;
  background: transparent;
  cursor: pointer;
  overflow: hidden;
}
.radikalwp-btn-skew span {
  position: relative;
  z-index: 1;
  display: block;
  padding: 12px 34px;
  font-size: 15px;
  font-weight: 700;
  color: #0ea5e9;
  transition: color .3s ease;
}
.radikalwp-btn-skew::before {
  content: '';
  position: absolute;
  inset: 0;
  background: #0ea5e9;
  transform: translateX(101%) skewX(-12deg);
  transition: transform .35s ease;
}
.radikalwp-btn-skew:hover::before { transform: translateX(0) skewX(0); }
.radikalwp-btn-skew:hover span { color: #fff; }