.k-block-type-button button {
  border: 2px solid #000;
  display: inline-flex;
  border-radius: 0;
  padding: 0.25rem 1.5rem;
  cursor: pointer;
}

.k-block-type-button button:empty::after {
  content: "Button text …";
  color: var(--color-text-light);
}

.k-block-type-button button:focus {
  outline: 0;
  border-color: var(--color-focus);
}