<a href="#" class="cp_btn">button</a>

a.cp_btn {
  position: relative;
  display: block;
  width: 160px;
  padding: 0.8em;
  text-align: center;
  font-weight: bold;
  text-decoration: none;
  color: #8E24AA;
  text-shadow: 0 0 5px white;
  background: repeating-linear-gradient(-45deg, #CE93D8, #CE93D8 3px,#E1BEE7 3px, #E1BEE7 7px);
  border-radius: 4px;
  transition: .4s ease-in-out;
}
a.cp_btn:hover {
  background: repeating-linear-gradient(-45deg, #CE93D8, #CE93D8 5px,#E1BEE7 5px, #E1BEE7 9px);
  transition: .4s ease-in-out;
}