File: //usr/share/cockpit/systemd/index.html
<!DOCTYPE html>
<html id="system-overview-page" class="pf-theme-dark">
<head>
<meta charset="utf-8">
<title>Overview</title>
<meta name="description" content="">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="overview.css">
<script type="text/javascript" src="../base1/cockpit.js"></script>
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<script type="text/javascript" src="overview.js"></script>
<script type="text/javascript" src="po.js"></script>
<script src="../manifests.js"></script>
</head>
<body class="pf-m-redhat-font pf-m-tabular-nums">
<div class="ct-page-fill" id="overview"></div>
<script src="../performance/performance.js"></script>
</body>
</html>