bootstrap/lib/accordion.less

// ACCORDION
// ---------

.accordion {
  padding: 0;
}

.accordion-heading {
  padding: 5px 10px;
  border: 1px solid #ddd;
  border-bottom: 0;
}

.accordion-body {
  border-bottom: 1px solid #ddd;
  margin: 0 0 1px 0;
}

.accordion-inner {
  padding: 10px;
  border: 1px solid #ddd;
  border-bottom: 0;
  margin-bottom: 0;
}

.accordion .in {
  margin-bottom: @baseLineHeight / 2;
}