h2 {
  border-top: 1px solid black;
  border-bottom: 1px solid black;
}

.controls {
  border-bottom: 1px solid black;
}

.controls .slides {
  border-right: 1px solid black;
}

.controls .control {
  border-right: 1px solid black;
}

.controls .control:last-child {
  border-right: 0;
}

.content {
  border-bottom: 1px solid black;
}

.content .caption {
  border-right: 1px solid black;
}