<body>
<div class="tree">
<ul>
<li>
<a href="#">
<div class="heda"></div>
</a>
<ul>
<li>
<a href="#">
<div class="heda"></div>
</a>
<ul>
<li>
<a href="#">
<div class="heda"></div>
</a>
</li>
<li>
<a href="#">
<div class="heda"></div>
</a>
</li>
<li>
<a href="#">
<div class="heda"></div>
</a>
</li>
<li>
<a href="#">
<div class="heda"></div>
</a>
</li>
<li>
<a href="#">
<div class="heda"></div>
</a>
</li>
<li>
<a href="#">
<div class="heda"></div>
</a>
</li>
</ul>
</li>
<li>
<a href="#">
<div class="heda"></div>
</a>
</li>
<li>
<a href="#">
<div class="heda"></div>
</a>
</li>
<li>
<a href="#">
<div class="heda"></div>
</a>
</li>
<li>
<a href="#">
<div class="heda"></div>
</a>
</li>
<li>
<a href="#">
<div class="heda"></div>
</a>
</li>
</ul>
</li>
</ul>
</div>
</body>
<style lang="scss" scoped>
* {
margin: 0;
padding: 0;
text-decoration: none;
}
.tree {
background: white;
}
.tree ul {
padding-top: 20px;
position: relative;
webkit-transition: all 0.5s;
-moz-transition: all 0.5s;
transition: all 0.3s;
display: flex;
justify-content: center;
}
.tree li {
float: left;
list-style: none;
text-align: center;
position: relative;
padding: 20px 5px 0 5px;
width:100%;
}
.tree li::before,
.tree li::after {
content: "";
position: absolute;
top: 0;
right: 50%;
width: 50%;
height: 20px;
border-top: 1px solid #ccc;
}
.tree li:after {
right: auto;
left: 50%;
border-left: 1px solid #ccc;
}
.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 10px 0 0;
}
.tree li:first-child::after {
border-radius: 10px 0 0 0;
}
.tree li:only-child::before,
.tree li:only-child::after {
border: none;
}
.tree li:only-child {
padding-top: 0;
}
.tree ul ul::before {
content: "";
position: absolute;
top: 0;
left: 50%;
border-left: 1px solid #ccc;
width: 0;
height: 20px;
}
.tree a {
font-size: 12px;
display: inline-block;
color: #666;
text-decoration: none;
border-radius: 5px;
}
.heda {
width: 50px;
height: 60px;
margin: auto;
background: #ccc;
text-align: center;
}
</style>
