* {margin: 0; padding: 0;}
 
.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;
}
 
.tree li a:hover, .tree li a:hover+ul li a {
	background: #c8e4f8; 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;
}