404.html

<!doctype html>

<html lang="en" class="dark-theme">
    <head>
        <meta charset="utf-8">
        <title>Redirecting...</title>

        <style>
            body {
                background-color: #2b2b2b;
                font-family: Arial, serif;
            }
            p {
                color: #fff;
                font-size: 2em;
                padding: 0.5em;
                text-align: center;
            }
            a {
                color: #fff;
            }
        </style>

        <script>
            let loc
            if (window.location.href.includes("?p=")) {
                //Prevent infinite redirect incase of issue
            } else {
                loc = window.location.origin + "?p=" + window.location.pathname;
                window.location.href = loc
            }

            function onLoad() {
                document.getElementById('text').innerHTML = `If you are not redirected, <a href='${loc}'>Click Here</a>`
            }
        </script>
    </head>

    <body onload="onLoad()">
        <p id="text">
            If you are seeing this page, you have JavaScript disabled. This site requires JavaScript to function properly.
        </p>
    </body>
</html>