diff --git a/asset/docsify-sidebar-collapse.min.js b/asset/docsify-sidebar-collapse.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..2b067c7e25048f5f7b43cff135c56eb28b7bbc47
--- /dev/null
+++ b/asset/docsify-sidebar-collapse.min.js
@@ -0,0 +1 @@
+!function(e){("object"!=typeof exports||"undefined"==typeof module)&&"function"==typeof define&&define.amd?define(e):e()}(function(){"use strict";function e(e,n){var t,a=(n=void 0===n?{}:n).insertAt;e&&"undefined"!=typeof document&&(t=document.head||document.getElementsByTagName("head")[0],(n=document.createElement("style")).type="text/css","top"===a&&t.firstChild?t.insertBefore(n,t.firstChild):t.appendChild(n),n.styleSheet?n.styleSheet.cssText=e:n.appendChild(document.createTextNode(e)))}var t;function a(e){e&&null!=t&&(e=e.getBoundingClientRect().top,document.querySelector(".sidebar").scrollBy(0,e-t))}function n(){requestAnimationFrame(function(){var e=document.querySelector(".app-sub-sidebar > .active");if(e)for(e.parentNode.parentNode.querySelectorAll(".app-sub-sidebar").forEach(function(e){return e.classList.remove("open")});e.parentNode.classList.contains("app-sub-sidebar")&&!e.parentNode.classList.contains("open");)e.parentNode.classList.add("open"),e=e.parentNode})}function o(e){t=e.target.getBoundingClientRect().top;var n=d(e.target,"LI",2);n&&(n.classList.contains("open")?(n.classList.remove("open"),setTimeout(function(){n.classList.add("collapse")},0)):(function(e){if(e)for(e.classList.remove("open","active");e&&"sidebar-nav"!==e.className&&e.parentNode;)"LI"!==e.parentNode.tagName&&"app-sub-sidebar"!==e.parentNode.className||e.parentNode.classList.remove("open"),e=e.parentNode}(s()),i(n),setTimeout(function(){n.classList.remove("collapse")},0)),a(n))}function s(){var e=document.querySelector(".sidebar-nav .active");return e||(e=d(document.querySelector('.sidebar-nav a[href="'.concat(decodeURIComponent(location.hash).replace(/ /gi,"%20"),'"]')),"LI",2))&&e.classList.add("active"),e}function i(e){if(e)for(e.classList.add("open","active");e&&"sidebar-nav"!==e.className&&e.parentNode;)"LI"!==e.parentNode.tagName&&"app-sub-sidebar"!==e.parentNode.className||e.parentNode.classList.add("open"),e=e.parentNode}function d(e,n,t){if(e&&e.tagName===n)return e;for(var a=0;e;){if(t<++a)return;if(e.parentNode.tagName===n)return e.parentNode;e=e.parentNode}}e(".sidebar-nav > ul > li ul {\n  display: none;\n}\n\n.app-sub-sidebar {\n  display: none;\n}\n\n.app-sub-sidebar.open {\n  display: block;\n}\n\n.sidebar-nav .open > ul:not(.app-sub-sidebar),\n.sidebar-nav .active:not(.collapse) > ul {\n  display: block;\n}\n\n/* 抖动 */\n.sidebar-nav li.open:not(.collapse) > ul {\n  display: block;\n}\n\n.active + ul.app-sub-sidebar {\n  display: block;\n}\n"),document.addEventListener("scroll",n);e("@media screen and (max-width: 768px) {\n  /* 移动端适配 */\n  .markdown-section {\n    max-width: none;\n    padding: 16px;\n  }\n  /* 改变原来按钮热区大小 */\n  .sidebar-toggle {\n    padding: 0 0 10px 10px;\n  }\n  /* my pin */\n  .sidebar-pin {\n    appearance: none;\n    outline: none;\n    position: fixed;\n    bottom: 0;\n    border: none;\n    width: 40px;\n    height: 40px;\n    background: transparent;\n  }\n}\n");var r,c="DOCSIFY_SIDEBAR_PIN_FLAG";function l(){var e="true"===(e=localStorage.getItem(c));localStorage.setItem(c,!e),e?(document.querySelector(".sidebar").style.transform="translateX(0)",document.querySelector(".content").style.transform="translateX(0)"):(document.querySelector(".sidebar").style.transform="translateX(300px)",document.querySelector(".content").style.transform="translateX(300px)")}768<document.documentElement.clientWidth||(localStorage.setItem(c,!1),(r=document.createElement("button")).classList.add("sidebar-pin"),r.onclick=l,document.body.append(r),window.addEventListener("load",function(){var n=document.querySelector(".content");document.body.onclick=n.onclick=function(e){e.target!==document.body&&e.currentTarget!==n||"true"===localStorage.getItem(c)&&l()}})),function(){if(window.$docsify){for(var e=arguments.length,n=new Array(e),t=0;t<e;t++)n[t]=arguments[t];$docsify.plugins=n.concat($docsify.plugins||[])}else console.error("这是一个docsify插件，请先引用docsify库！")}(function(e,n){e.doneEach(function(e,n){var t=s();i(t),document.querySelectorAll(".sidebar-nav li").forEach(function(e){e.querySelector("ul:not(.app-sub-sidebar)")?e.classList.add("folder"):e.classList.add("file")}),function n(e,t){e&&e.childNodes&&e.childNodes.forEach(function(e){e.classList&&e.classList.contains("folder")&&(e.classList.add("level-".concat(t)),window.$docsify&&window.$docsify.sidebarDisplayLevel&&"number"==typeof window.$docsify.sidebarDisplayLevel&&t<=window.$docsify.sidebarDisplayLevel&&e.classList.add("open"),e&&1<e.childNodes.length&&n(e.childNodes[1],t+1))})}(document.querySelector(".sidebar-nav > ul"),1),a(t),n(e)}),e.ready(function(){document.querySelector(".sidebar-nav").addEventListener("click",o)})})});
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diff --git a/asset/sidebar.min.css b/asset/sidebar.min.css
new file mode 100644
index 0000000000000000000000000000000000000000..94996d37c66283cedbd18e4536abeef24f769651
--- /dev/null
+++ b/asset/sidebar.min.css
@@ -0,0 +1 @@
+.sidebar-nav li{position:relative;margin:0;cursor:pointer}.sidebar-nav ul:not(.app-sub-sidebar)>li:not(.file)::before{content:'';display:block;position:absolute;top:11px;left:-12px;height:6px;width:6px;border-right:1px solid #505d6b;border-bottom:1px solid #505d6b;transform:rotate(-45deg);transition:transform .1s}.sidebar-nav ul:not(.app-sub-sidebar)>li.open::before{transform:rotate(45deg)}.sidebar-nav ul:not(.app-sub-sidebar)>li.collapse::before{transform:rotate(-45deg)}
\ No newline at end of file
diff --git a/index.html b/index.html
index de0b5a816aaa0925502c0f07b8f51199e025ba3c..48fe067928f6c234b4585ec514795cc3077c9749 100644
--- a/index.html
+++ b/index.html
@@ -25,6 +25,7 @@
   <script src="asset/edit.js"></script>
   <link rel="stylesheet" href="asset/back-to-top.css">
   <script src="asset/back-to-top.js"></script>
+  <link rel="stylesheet" href="asset/sidebar.min.css">
 </head>
 <body>
   <div id="app">now loading...</div>
@@ -73,5 +74,6 @@
   <script src="asset/docsify-clicker.js"></script>
   <link rel="stylesheet" href="asset/docsify-quick-page.css">
   <script src="asset/docsify-quick-page.js"></script>
+  <script src="asset/docsify-sidebar-collapse.min.js"></script>
 </body>
 </html>
\ No newline at end of file