Drupal Isotope Hierarchical css

store_menu.css

.isotope-container {
   margin: 0 auto !important;
   min-height: 500px;
}
.isotope-container a {
	display: block;
}
.isotope-container ul,
.isotope-container li {
	text-align: center;
	list-style-type: none;
}
.isotope-element li,
.isotope-element ul, {
	margin: 0;
	padding: 0;
}
.isotope-element {
	width: 25%;
	height: 250px;
}
.isotope-options a,
.isotope-options a:link,
.isotope-options a:visited,
.isotope-options a:hover {
  color: #fff;
  text-decoration: none;
  line-height: 1.75em;
}
.item-list .isotope-options {
	border: 1px solid #999;
	border-radius: 5px;
	margin-bottom: 30px;
	padding: 30px;
	text-align: center;
	background-color: #F0F8FF;
}
/* Menu Items */
.isotope-options li{
	display: inline;
	transition: height .5s ease;
	transition-delay: .2s;
}
.isotope-options li.first {
	background: #1E90FF;
	border-radius: 5px;
	display: inline-block;
	padding: 5px 10px;
	-moz-transition: background-color .3s;
	-o-transition: background-color .3s;
	-webkit-transition: background-color .3s;
	transition: background-color .3s;
	margin: 0;
}
.isotope-options li a span {
	font-size: 15px;
	font-style: unset;
	vertical-align: middle;
	display: block;
}
/* Visibility toggle classes */
.isotope-options li.sub-parent {
	background: #657E97;
	display: block;
    height: 0px;
	margin:auto;
    padding: 0px;
    overflow: hidden;
    border-radius: 5px;
}
.isotope-options li.sub-child {
	background: #1B3855;
	width: 50%;
	display: block;
    height: 0px;
	margin:auto;
    padding: 0px;
    overflow: hidden;
    border-radius: 5px;
}
.isotope-options li.sub-grandchild {
	background: #9098A0;
	display: block;
    height: 0px;
    margin: auto;
    padding: 0px;
    overflow: hidden;
    border-radius: 5px;
    width: 25%;
}
.isotope-options li.hovered {
  height: 1.75em;
}

.isotope-options li:hover span{
	background: #ADD8E6;
	color: #000;
}
.isotope-options .active {
	background: #FFD700;
	color: #555;
}
/* Responsive */
@media all and (max-width: 550px) {
}