【实例简介】

【实例截图】

【核心代码】

css绘制结构图

* {margin: 0; padding: 0;}

.tree{width:760px; margin:40px auto 0 auto}

.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 solid #ccc;

width: 50%; height: 20px;

}

.tree li::after{

right: auto; left: 50%;

border-left: 1px solid #ccc;

}

/*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 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;

}

/*Time to add downward connectors from parents*/

.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;

}

/*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 solid #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;

}