

.menuoculto {
  position: relative;
  width: 10em;
  overflow: hidden;
  height: 0;
  -webkit-transition: all 0.2s ease;
  transition: all 0.2s ease;
}
.menuoculto:before {
  content: "x";
  position: absolute;
  right: 5px;
  top: 12px;
}
.menuoculto li {
  list-style: none;
  padding: 0.6em 1em;
  background-color: #fff;
}
.menuoculto a {
  text-decoration: none;
  color: #333;
}
.menuoculto a:hover {
  color: #f20256;
}

.open-hide {
  background-color: #fff;
  width: 35px;
  height: 35px;
  display: block;
  background-image: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/6001/menuoculto.png);
  background-repeat: no-repeat;
  background-position: center center;
  background-size: 25px;
  text-indent: -9999em;
  outline: 0;
}
.open-hide:hover {
  cursor: pointer;
}

.open-hide:focus + .menuoculto {
  height: 120px;
  padding-top: 1em;
}