列表图表 HTML CSS

Question

我想按以下方式创建组织树。

无法生成如图所示的树

请在生成如图所示的树时获得帮助，因为我有多个级别，其中一些数据必须显示为扩展，如 Level21。

下面是我用来生成树的代码。

/*Now the CSS*/

* {
  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;
}


/*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;
}


/*Thats all. I hope you enjoyed it.
Thanks :)*/

<div class="tree">
  <ul class="level1">
    <li class="level11">
      <a href="#">Level 1</a>
      <ul class="level2">
        <li class="level21">
          <a href="#">Level 21</a>
        </li>
        <li class="level22">
          <a href="#">Level 22</a>
        </li>
      </ul>
    </li>
  </ul>
</div>

Answer 1

您需要将 class 添加到 <ul> 元素（例如 "side"），即：

1. 加长向下的连接器（可能height: 40px）
2. 将第一个 child 置于 parent
的正下方
3. 将第二个 child 置于 parent
的右侧
4. 删除现有的 child 个连接器
5. 向第二个 child 添加侧连接器。

Answer 2

我对您的代码做了一些调整。这将帮助您入门。

我的补充：

li.levelSide::before {
  height: 0px;
  border: none;
}

li.levelSide {
  position: absolute;
  left: 100%;
  padding-top: 0;
  top: 0;
  padding-left: 0;
}

/*Now the CSS*/

* {
  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;
}


/*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;
}


/*Thats all. I hope you enjoyed it.
Thanks :)*/

li.levelSide::before {
  height: 0px;
  border: none;
}

li.levelSide {
  position: absolute;
  left: 100%;
  padding-top: 0;
  top: 0;
  padding-left: 0;
}

<div class="tree">
  <ul class="level1">
    <li class="level11">
      <a href="#">Level 1</a>
      <ul class="level2">
        <li class="level21">
          <a href="#">Level 21</a>
          <ul class="level2">
            <li class="level31">
              <a href="#">Level 31</a>
            </li>
            <li class="levelSide">
              <a href="#">Side Level</a>
            </li>
          </ul>

        </li>

        <li class="levelSide">
          <a href="#">Side Level</a>
        </li>
      </ul>
    </li>

  </ul>
</div>