body { background-color: #f0f0f0; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; }

.item { height: 325px !important;
        background: none repeat scroll 0 0 rgba(0, 0, 0, 0.1) !important;
      }
#xc {   height: 325px !important;
        background: none repeat scroll 0 0 rgba(0, 0, 0, 0.1) !important;
      }
.nav li a:hover { color:#000;}
.thumbnail {             background: none repeat scroll 0 0 rgba(0, 0, 0, 0) !important;
            }

.tree {
  min-width: 4096px;
  zoom: 70%;
}

.tree ul {
  padding-top: 20px;
  position: relative;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
}

.tree li {
  float: left;
  text-align: center;
  list-style-type: none;
  position: relative;
  padding: 20px 5px 0 5px;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
}

.tree li::before, .tree li::after {
  content: '';
  position: absolute;
  top: 0;
  right: 50%;
  border-top: 1px solid #ccc;
  width: 50%;
  height: 20px;
}

.tree li::after {
  right: auto;
  left: 50%;
  border-left: 1px solid #ccc;
}

.tree li:only-child::after, .tree li:only-child::before {
  display: none;
}

.tree li:only-child {
  padding-top: 0;
}

.tree li:first-child::before, .tree li:last-child::after {
  border: 0 none;
}

.tree li:last-child::before {
  border-right: 1px solid #ccc;
  border-radius: 0 5px 0 0;
  -webkit-border-radius: 0 5px 0 0;
  -moz-border-radius: 0 5px 0 0;
}

.tree li:first-child::after {
  border-radius: 5px 0 0 0;
  -webkit-border-radius: 5px 0 0 0;
  -moz-border-radius: 5px 0 0 0;
}

.tree ul ul::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  border-left: 1px solid #ccc;
  width: 0;
  height: 20px;
}

.tree li a {
  border: 1px solid #ccc;
  padding: 5px 10px;
  text-decoration: none;
  color: #666;
  font-family: arial, verdana, tahoma;
  font-size: 11px;
  display: inline-block;
  border-radius: 5px;
  -webkit-border-radius: 5px;
  -moz-border-radius: 5px;
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  background-color: #fff;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.tree li a:hover, .tree li a:hover+ul li a {
  background: #e9e9e9;
  color: #000;
  border: 1px solid #94a0b4;
}

.tree li a:hover+ul li::after, .tree li a:hover+ul li::before, .tree li a:hover+ul::before, .tree li a:hover+ul ul::before {
  border-color: #94a0b4;
}