railties/lib/rails/templates/layouts/application.html.erb
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title><%= @page_title %></title>
<style>
body { background-color: #fff; color: #333; }
body, p, ol, ul, td {
font-family: helvetica, verdana, arial, sans-serif;
font-size: 13px;
line-height: 18px;
}
pre {
background-color: #eee;
padding: 10px;
font-size: 11px;
white-space: pre-wrap;
}
a { color: #000; }
a:visited { color: #666; }
a:hover { color: #fff; background-color:#000; }
h2 { padding-left: 10px; }
@media (prefers-color-scheme: dark) {
body {
background-color: #222;
color: #ececec;
}
pre {
background-color: #333;
}
a { color: #fff; }
a:visited { color: #999; }
a:hover { color: #000; background-color: #fff; }
}
<%= yield :style %>
</style>
</head>
<body>
<%= yield %>
</body>
</html>