div.tree *{margin: 0; padding: 0;}
#mainContent{margin:2px; padding = 2px;}

.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;
}

/*We will use ::before and ::after to draw the connectors*/

.tree li::before, .tree li::after{
	content: '';
	position: absolute; top: 0; right: 50%;
	border-top: 1px double black;
	width: 50%; height: 20px;
}
.tree li::after{
	right: auto; left: 50%;
	border-left: 1px double black;
}

/*We need to remove left-right connectors from elements without 
any siblings*/
.tree li:only-child::after, .tree li:only-child::before {
	display: none;
}

/*Remove space from the top of single children*/
.tree li:only-child{ padding-top: 0;}

/*Remove left connector from first child and 
right connector from last child*/
.tree li:first-child::before, .tree li:last-child::after{
	border: 0 none;
}
/*Adding back the vertical connector to the last nodes*/
.tree li:last-child::before{
	border-right: 1px double black;
	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;
}

/*Time to add downward connectors from parents*/
.tree ul ul::before{
	content: '';
	position: absolute; top: 0; left: 50%;
	border-left: 1px double black;
	width: 0; height: 20px;
}

.tree li a{
	border: 1px double black;
	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;
}

/*Time for some hover effects*/
/*We will apply the hover effect the the lineage of the element also*/
.tree li a:hover, .tree li a:hover+ul li a {
	background: #c8e4f8; color: #000; border: 1px double #94a0b4;
}
/*Connector styles on hover*/
.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;
}

.buttonStyle
{
	background: lightgreen  no-repeat scroll top right;
    color: #444;
    font: bold 12pt "Arial",Georgia,Sans-serif ;
    height: 24px;
    margin-right: 6px;
	padding:2px 20px 3px 20px;
    text-decoration: none;
	border-radius: 12px;
}
	#onlyBody {background:white; }
	#mainContent {  margin:6px; color:black; font-style:normal; font-family:"Arial",Georgia,Sans-serif ;}
	#mainContent p{margin:6px;}
	h1.intro { color:blue; margin-left: 7px;}
	p {font: normal 14pt "Arial",Georgia,Sans-serif ; }
	p.red, span.red {color:red;  font: normal 14pt "Arial",Georgia,Sans-serif ;  }
	p.blue, span.blue{color:blue; font: normal 14pt "Arial",Georgia,Sans-serif ;}
	p.green, span.green{color:green; font: normal 14pt  "Arial",Georgia,Sans-serif ;}
	p.brown, span.brown{color:brown; font: normal 14pt "Arial",Georgia,Sans-serif ; }
	div.whyInvalidClass { border-radius:5px; background:lightblue; width:180px; font: normal 14pt "Arial",Georgia,Sans-serif ;}
	#invalidxy{ background:silver; border-radius:5px; background-position:left; }
	#invalidz{background:SpringGreen; border-radius:5px; background-position:right bottom; }
	#allColoringsWithColors { line-height:140%;				}
	#EqAndN p { margin:6px;		}
	hr {border-style:outset;}
	#treeOutput * { float:left; text-align:center; padding: 5px 10px;}