public/maintenance_page/maintenance.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Internal Server Error (500)</title>
<style type="text/css">
html, body {
background-color: #f6f7f7;
font-family: 'Proxima Soft', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';
text-align: center;
color: #333;
}
h2 {
padding: 60px 20px 10px;
font-size: 26px;
}
p {
padding: 0 50px;
font-size: 18px;
line-height: 28px;
padding-bottom: 60px;
}
.box {
max-width: 620px;
width: 90%;
background-color: #ffffff;
border-radius: 5px;
margin: 10% auto 0;
}
</style>
</head>
<body>
<div class="box">
<h2>The marketplace is temporarily down for maintenance</h2>
<p>Please try again in few moments.</p>
</div>
</body>
</html>