body {
  font-family: monospace;
}

.dialog-choice {
  border-top: solid 2px;
  border-bottom: solid 2px;
  margin: 20px 0px;
}

details {
  margin: 5px;
  padding: 2px 10px;
  border-left: 2px solid black;
  max-width: 400px;
}

details[open] > summary {
  font-size: large;
  font-weight: bold;
}

details[open] {
  border-bottom: 6px double black;
}