.link_white-border-black {
  color: #000;
  border: 1px solid #000;
  background-color: #fff;
  transition: background-color 0.4s ease-out, color 0.4s ease-out;
}
.link_white-border-black:hover,
.link_white-border-black:focus {
  color: #fff;
  border: 1px solid #fff;
  background-color: #000;
}
.link_white-border-black:focus {
  outline-color: #000;
}