.wp-block-button.custom-button .wp-block-button__link:hover,
.wp-block-button.custom-button .wp-block-button__link:active,
.wp-block-button.custom-button .wp-block-button__link:focus {
  background: transparent !important;
	color: #fff !important;
	background-color: transparent !important;
	border-color:  #fff !important;
	border-width: 2px !important;
	border-style: solid !important;
}