details {
  border: 2px solid #434343;
  border-radius: 4px;
  margin-block: 8px;
  width: 100%;
}

details > summary {
  background-color: #2d2d2d;
  cursor: pointer;
  font-size: 1.25rem;
  padding: 8px;
}

details[open] > summary {
  border-bottom: 2px solid #434343;
}

details > ul {
  margin-block-start: 16px;
}