.container {
  margin-top: 3em;
}

.card-header {
  padding: 0;
  background-color: transparent;
  text-align: center;
}

.card-header a {
  display: block;
  padding: .75rem 1.25rem;
  color: #000;
  border-bottom: 1px solid #b42b2b;
  text-decoration: none;
}

.card-header a[aria-expanded=false] {
  background-color: rgba(0,0,0,0.03);
}

.card-header a[aria-expanded=false]:hover {
  background-color: rgb(180,43,43);
  color: white;
}

.card-header a:before {
  font-family: 'FontAwesome';
  font-size: inherit;
  text-rendering: auto;
}

.card-header a[aria-expanded=false]:before {
  content: "\f0fe";
  float: left;
}

.card-header a[aria-expanded=false]:hover::before {
  content: "\f0fe";
  float: left;
}