【发布时间】：2016-06-01 03:00:02
【问题描述】：
我有一个简单的表格样式，用于显示一棵树。每个工作表可以有多个或任何子级。
节点少的样式表表现良好，但大量的行为不正确。
具有许多节点的树的示例（出现故障，您可以看到树是如何被切割并向下跳的）：
如果我将 div 宽度强制为特定宽度，我会得到我想要的结果，但我需要该机制是自动的，并且如果可能的话保持纯 CSS。示例树运行良好，手动设置宽度：
更具体地说，无论屏幕大小，我都希望树的宽度是自动的，并且必须使用滚动才能完全看到它。标签内容的长度可以变化，所以它的大小是自我调整的。
这是我的样式表和示例树：
* {margin: 0; padding: 0;}
/*.tree{width:3000px; 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;
}<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>感谢您花时间帮助我。提前致谢。
【问题讨论】：
-
垂直滚动还是水平滚动？
-
@hello 水平。
标签： html css list tree overflow