/* 设置侧边栏文字之间的间距和边缘的距离 */
.sidebar-nav li.file > a,
.sidebar-nav li.folder > p > a {
  margin-top: 7px;
  margin-bottom: 7px;
  padding: var(--sidebar-nav-pagelink-padding, var(--sidebar-nav-link-padding));
}

/* 设置指定的文字有收缩的文件夹效果 */

.sidebar-nav li.file > a[title="2. 设备连接"],
.sidebar-nav li.file > a[title="2. Device Connection"],
.sidebar-nav li.file > a[title="3. 功能介绍"],
.sidebar-nav li.file > a[title="3. Function Introduction"],
.sidebar-nav li.file > a[title="4. ToF 相机的实现原理"],
.sidebar-nav li.file > a[title="4. Direct ToF vs Indirect ToF"],
.sidebar-nav li.file > a[title="2. BaseSDK (C/C++)"],
.sidebar-nav li.folder a[title="3. MultilanguageSDK"],
.sidebar-nav li.folder a[title="4. 3rd-Party Plugin"],
.sidebar-nav li.folder a[title="3.1. Python"],
.sidebar-nav li.folder a[title="3.2. CSharp"],
.sidebar-nav li.folder a[title="4.1. ROS"],
.sidebar-nav li.folder a[title="4.2. ROS2"] {
  background: left center no-repeat url(./pics/collapse.png);
  background-size: 10px 10px;
}

/* 设置开启的文件夹图片和大小 */
.sidebar-nav
  li.open.file.active
  > a[href^="#/"]:not([href*="?id="]):not(:only-child) {
  background: left center no-repeat url(./pics/open.png);
  background-size: 10px 10px;
}