404 PageNotFound
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-type" content="text/html; charset=utf-8">
<meta http-equiv="Content-Security-Policy" content="default-src 'none'; style-src 'unsafe-inline'; img-src data:; connect-src 'self'">
<title>Page not found · GitHub Pages</title>
<style type="text/css" media="screen">
body {
background-color: #f1f1f1;
margin: 0;
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
}
.container { margin: 50px auto 40px auto; width: 600px; text-align: center; }
a { color: #4183c4; text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { width: 800px; position:relative; left: -100px; letter-spacing: -1px; line-height: 60px; font-size: 60px; font-weight: 100; margin: 0px 0 50px 0; text-shadow: 0 1px 0 #fff; }
p { color: rgba(0, 0, 0, 0.5); margin: 20px 0; line-height: 1.6; }
ul { list-style: none; margin: 25px 0; padding: 0; }
li { display: table-cell; font-weight: bold; width: 1%; }
.logo { display: inline-block; margin-top: 35px; }
.logo-img-2x { display: none; }
@media
only screen and (-webkit-min-device-pixel-ratio: 2),
only screen and ( min--moz-device-pixel-ratio: 2),
only screen and ( -o-min-device-pixel-ratio: 2/1),
only screen and ( min-device-pixel-ratio: 2),
only screen and ( min-resolution: 192dpi),
only screen and ( min-resolution: 2dppx) {
.logo-img-1x { display: none; }
.logo-img-2x { display: inline-block; }
}
#suggestions {
margin-top: 35px;
color: #ccc;
}
#suggestions a {
color: #666666;
font-weight: 200;
font-size: 14px;
margin: 0 10px;
}
</style>
</head>
<body>
<div class="container">
<h1>404</h1>
<p><strong>File not found</strong></p>
<p>
The site configured at this address does not
contain the requested file.
</p>
<p>
If this is your site, make sure that the filename case matches the URL.<br>
For root URLs (like <code>http://example.com/</code>) you must provide an
<code>index.html</code> file.
</p>
<div id="suggestions">
<a href="/">返回首页</a> —
<a href="javascript:history.go(-1);">返回上一页</a>
</div>
</div>
</body>
</html>