div+css实现多级分类点击展开收起效果代码-html代码-BFW代码库

div+css实现多级分类点击展开收起效果代码

代码语言：html

代码描述：div+css实现多级分类点击展开收起效果代码，无js代码，纯css+div实现。

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

<html lang="en">

<head>
    <meta charset="UTF-8">
<link type="text/css" rel="stylesheet" href="//repo.bfw.wiki/bfwrepo/css/ionicons.min.css">
<style>

summary {
    display: block;
    cursor: pointer;
    outline: 0
}

summary::-webkit-details-marker {
    display: none
}

body {
    background-color: #191c1e;
    color: white;
    font-size: 1.6rem;
    font-family: arial;
    margin: 0;
    padding: 3rem
}

.tree-nav__item {
    display: block;
    white-space: nowrap;
    color: #ccc;
    position: relative
}

.tree-nav__item.is-expandable::before {
    border-left: 1px solid #333;
    content: "";
    height: 100%;
    left: .8rem;
    position: absolute;
    top: 2.4rem;
    height: calc(100% - 2.4rem)
}

.tree-nav__item .tree-nav__item {
    margin-left: 2.4rem
}

.tree-nav__item.is-expandable[open]>.tree-nav__item-title::before {
    font-family: "ionicons";
    transform: rotate(90deg)
}

.tree-nav__item.is-expandable>.tree-nav__item-title {
    padding-left: 2.4rem
}

.tree-na.........完整代码请登录后点击上方下载按钮下载查看