app/404.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Page Not Found :(</title>
<style>
::-moz-selection {
background: #b3d4fc;
text-shadow: none;
}
::selection {
background: #b3d4fc;
text-shadow: none;
}
html {
padding: 30px 10px;
font-size: 20px;
line-height: 1.4;
color: #737373;
background: #f0f0f0;
-webkit-text-size-adjust: 100%;
-ms-text-size-adjust: 100%;
}
html,
input {
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
}
body {
max-width: 500px;
_width: 500px;
padding: 30px 20px 50px;
border: 1px solid #b3b3b3;
border-radius: 4px;
margin: 0 auto;
box-shadow: 0 1px 10px #a7a7a7, inset 0 1px 0 #fff;
background: #fcfcfc;
}
h1 {
margin: 0 10px;
font-size: 50px;
text-align: center;
}
h1 span {
color: #bbb;
}
h3 {
margin: 1.5em 0 0.5em;
}
p {
margin: 1em 0;
}
ul {
padding: 0 0 0 40px;
margin: 1em 0;
}
.container {
max-width: 380px;
_width: 380px;
margin: 0 auto;
}
input::-moz-focus-inner {
padding: 0;
border: 0;
}
</style>
</head>
<body>
<div class="container">
<h1>Not found <span>:(</span></h1>
<p>Sorry, but the page you were trying to view does not exist.</p>
<p>It looks like this was the result of either:</p>
<ul>
<li>a mistyped address</li>
<li>an out-of-date link</li>
</ul>
</div>
</body>
</html>