纯css实现可折叠线条树形菜单效果代码-html代码-BFW代码库

纯css实现可折叠线条树形菜单效果代码

代码语言：html

代码描述：纯css实现可折叠线条树形菜单效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开


<!DOCTYPE html>
<html lang="en" >

<head>

  <meta charset="UTF-8">

  
<style>
body{
    background: white;
}
@charset "UTF-8";
/* TRANSITIONS */
/* COLORS */
/* TREE MENU */
.lk-tree-menu {
  padding: 10px;
  list-style: none;
}
@keyframes slideDown {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
.lk-tree-menu input {
  position: absolute;
  clip: rect(0, 0, 0, 0);
}
.lk-tree-menu input ~ ul {
  display: none;
  padding: 0px;
  animation: slideDown .5s  ease-out;
}
.lk-tree-menu input:checked ~ ul {
  display: block;
}
.lk-tree-menu input:checked ~ label.tree_label:before {
  content: "–";
}
.lk-tree-menu input:checked ~ label.tree_label:after {
  border-radius: 0 0.3em 0 0;
  border-top: 1px solid #606060;
  border-right: 1px solid #606060;
  border-bottom: 0;
  border-left: 0;
  bottom: 0;
  top: 0.5em;
  height: auto;
  margin: 5px 0px 0px 1px;
}
.lk-tree-menu > li:last-child:before {
  display: none;
}
.lk-tree-menu li {
  line-height: 1.2;
  position: relative;
  padding: 0 0 1em 1em;
  list-style: none;
}
.lk-tree-menu li:last-child:before {
  height: 1em;
  bottom: auto;
}
.lk-tree-menu li:before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: -0.5em;
  display: block;
  width: 0;
  border-left: 1px solid #606060;
  content: "";
}
.lk-tree-menu li:last-child {
  padding-bottom: 0;
}
.lk-tree-menu li ul li {
  padding: 0.5em 0 0 1em;
}
.lk-tree-menu label {
  -webkit-transition: all 0.2s ease-out;
  -moz-transition: all 0.2s ease-out;
  -ms-transition: all 0.2s ease-out;
  -o-transition: all 0.2s ease-out;
  transition: all 0.2s ease-out;
  border-radius: 3px;
}
.lk-tree-menu label.tree_label {
  cursor: pointer;
  margin: 0px;
  width: 100%;
  padding: 5px;
}
.lk-tree-menu label:hover {
  color: white;
  background: #6ebc20;
}
.lk-tree-menu label.tree_label:before {
  background: #609d22;
  color: #fff;
  position: relative;
  z-index: 1;
  float: left;
  margin: 0 1em 0 -2.3em;
  width: 1em;
  height: 1em;
  border-radius: 1em;
  content: "+";
  text-align: center;
  line-height: 0.9em;
}
.lk-tree-menu label.tree_label:after {
  border-bottom: 0;
}
.lk-tree-menu .tree_label {
  position: relative;
  display: inline-block;
  background: #fff;
}
.lk-tree-menu .tree_label:after {
  position: abso.........完整代码请登录后点击上方下载按钮下载查看