.is-style-tanzaku-button a,
.is-style-tanzaku-button .wp-block-button__link {
  background: #000;
  color: #fff;
  padding: 16px 40px;
  display: block;
  margin: 0 auto;
  border-radius: revert;
  border: 1px solid #000;
  transition: 0.3s;
  -webkit-transition: 0.3s;
}
.is-style-tanzaku-button a:hover,
.is-style-tanzaku-button .wp-block-button__link:hover {
  background: #fff;
  border: 1px solid #ccc;
  color: #000;
}