ul .inner {
  padding-left: 1em;
  overflow: hidden;
  display: none;
}
ul .inner.show {
  /*display: block;*/
}

ul li a.toggle {
  width: 100%;
  display: block;
  background: rgba(0, 0, 0, 0.78);
  color: #fefefe;
  padding: .75em;
  border-radius: 0.15em;
  margin-bottom: 10px;
}