summary {
  display: list-item;
  margin-left: -2em;
  padding-bottom: 0.5em;
}

details {
  border-bottom: 1px solid #dcdcdc;
  padding-left: 2em;
}

details > :last-child {
  margin-bottom: 0;
}

details[open] {
  padding-bottom: 1em;
}

details[open] summary {
  margin-bottom: 0.5em;
}

details + details {
  margin-top: 0.5em;
}

p:empty {
  display: none;
}