.wp-block-button.is-style-lila .wp-block-button__link {
  background: #7100ca; 
  color: white; 
  padding: .7rem 2rem; 
  letter-spacing: 1px; 
  border-radius: 8px; 
  -webkit-transition: all .3s; 
  transition: all .3s;
}
 
.wp-block-button.is-style-lila .wp-block-button__link:hover {
  background: #6300b1; 
  color: rgba(255, 255, 255, 0.4);
  transition: all .3s;
}