I have simple sheet styles designed to display a tree. On each sheet there can be many or any child.
With a small number of stylesheets, it performs well, but with a lot of actions it is wrong.
An example of a tree with fewer nodes (works correctly):
An example of a tree with many nodes (failure, you can see how the tree is cut and dumped):
If I force the width of the div to a certain width, I get the result that I want, but I need a mechanism that will be automatic, and if possible, keep pure CSS. The example tree works well with manually set widths:
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:
* {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;
}
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name = "viewport" content="width = device-width">
<title>tree</title>
</head>
<body>
<div class="tree">
<ul>
<li>
<a href="#">0</a>
<ul>
<li>
<a href="#">1</a>
<ul>
<li>
<a href="#">4</a>
<ul>
<li>
<a href="#">9</a>
<ul>
<li>
<a href="#">19</a>
<ul>
<li>
<a href="#">38</a>
</li>
<li>
<a href="#">39</a>
</li>
</ul>
</li>
<li>
<a href="#">20</a>
<ul>
<li>
<a href="#">40</a>
</li>
<li>
<a href="#">41</a>
</li>
</ul>
</li>
<li>
<a href="#">21</a>
<ul>
<li>
<a href="#">42</a>
</li>
<li>
<a href="#">43</a>
</li>
</ul>
</li>
</ul>
</li>
<li>
<a href="#">10</a>
<ul>
<li>
<a href="#">22</a>
</li>
<li>
<a href="#">23</a>
</li>
</ul>
</li>
<li>
<a href="#">11</a>
<ul>
<li>
<a href="#">24</a>
</li>
</ul>
</li>
</ul>
</li>
<li>
<a href="#">5</a>
<ul>
<li>
<a href="#">12</a>
<ul>
<li>
<a href="#">25</a>
</li>
<li>
<a href="#">26</a>
</li>
<li>
<a href="#">27</a>
</li>
</ul>
</li>
<li>
<a href="#">13</a>
<ul>
<li>
<a href="#">28</a>
</li>
<li>
<a href="#">29</a>
</li>
</ul>
</li>
</ul>
</li>
<li>
<a href="#">6</a>
<ul>
<li>
<a href="#">14</a>
<ul>
<li>
<a href="#">30</a>
</li>
<li>
<a href="#">31</a>
</li>
</ul>
</li>
</ul>
</li>
</ul>
</li>
<li>
<a href="#">2</a>
<ul>
<li>
<a href="#">7</a>
<ul>
<li>
<a href="#">15</a>
<ul>
<li>
<a href="#">32</a>
</li>
<li>
<a href="#">33</a>
</li>
<li>
<a href="#">34</a>
</li>
</ul>
</li>
<li>
<a href="#">16</a>
</li>
</ul>
</li>
</ul>
</li>
<li>
<a href="#">3</a>
<ul>
<li>
<a href="#">8</a>
<ul>
<li>
<a href="#">17</a>
<ul>
<li>
<a href="#">35</a>
</li>
<li>
<a href="#">36</a>
</li>
<li>
<a href="#">37</a>
</li>
</ul>
</li>
<li>
<a href="#">18</a>
</li>
</ul>
</li>
</ul>
</li>
</ul>
</li>
</ul>
</div>
</body>
</html>
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