diff --git a/404.html b/404.html
deleted file mode 100644
index afb2c138789bc59d3936674ad93f5ff544b5c0e0..0000000000000000000000000000000000000000
--- a/404.html
+++ /dev/null
@@ -1,99 +0,0 @@
-<!DOCTYPE html>
-<!-- saved from url=(0035)https://codechina.csdn.net/404.html -->
-<html>
-  <head>
-    <meta http-equiv="Content-Type" content="text/html; charset=windows-1252" />
-    <meta content="width=device-width, initial-scale=1, maximum-scale=1" name="viewport" />
-    <link
-      rel="shortcut icon"
-      type="image/png"
-      href="https://codechina.csdn.net/uploads/-/system/appearance/favicon/1/logo_icon.png"
-      id="favicon"
-      data-original-href="/uploads/-/system/appearance/favicon/1/logo_icon.png"
-    />
-    <title>开源开发者加速空间</title>
-    <style>
-      body {
-        color: #666;
-        text-align: center;
-        font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
-        margin: auto;
-        font-size: 14px;
-      }
-
-      h1 {
-        font-size: 56px;
-        line-height: 100px;
-        font-weight: 400;
-        color: #456;
-      }
-
-      h2 {
-        font-size: 24px;
-        color: #666;
-        line-height: 1.5em;
-      }
-
-      h3 {
-        color: #456;
-        font-size: 20px;
-        font-weight: 400;
-        line-height: 28px;
-      }
-
-      hr {
-        max-width: 800px;
-        margin: 18px auto;
-        border: 0;
-        border-top: 1px solid #eee;
-        border-bottom: 1px solid white;
-      }
-
-      img {
-        max-width: 200px;
-        display: block;
-        margin: 40px auto;
-      }
-
-      a {
-        line-height: 100px;
-        font-weight: 400;
-        color: #4a8bee;
-        font-size: 18px;
-        text-decoration: none;
-      }
-
-      .container {
-        margin: auto 20px;
-      }
-
-      .go-back {
-        display: none;
-      }
-    </style>
-  </head>
-
-  <body>
-    <a href="https://codechina.csdn.net/">
-      <img src="./files/404.svg" alt="404 Logo" />
-    </a>
-    <h1>404</h1>
-    <div class="container">
-      <h3>The page could not be found or you don't have permission to view it.</h3>
-      <hr />
-      <p>The resource that you are attempting to access does not exist or you don't have the necessary permissions to view it.</p>
-      <p>Make sure the address is correct and that the page hasn't moved.</p>
-      <p>Please contact your CODE CHINA administrator if you think this is a mistake.</p>
-      <a href="javascript:history.back()" class="js-go-back go-back" style="display: inline">Go back</a>
-    </div>
-    <script>
-      ;(function () {
-        var goBack = document.querySelector('.js-go-back')
-
-        if (history.length > 1) {
-          goBack.style.display = 'inline'
-        }
-      })()
-    </script>
-  </body>
-</html>
