.read-more summary {
  cursor: pointer;
  list-style: none;
}

/* hide default arrow */
.read-more summary::-webkit-details-marker {
  display: none;
}

.read-more .less {
  display: none;
}

.read-more[open] .more {
  display: none;
}

.read-more[open] .less {
  display: inline;
}