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Add a custom 404 page to match site styling #45

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Add a custom 404 page to match site styling #45

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119 changes: 119 additions & 0 deletions 404.html
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Original file line number Diff line number Diff line change
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<!doctype html>
<html lang="en">
<head>
<script src="assets/js/gtag.js"></script>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>404 — Page not found</title>
<meta name="robots" content="noindex" />
<link rel="preconnect" href="https://fonts.googleapis.com" />
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
<link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap" rel="stylesheet" />
<script src="https://cdn.tailwindcss.com/3.4.16"></script>
<script>
tailwind.config = {
darkMode: 'class',
theme: {
extend: {
fontFamily: {
sans: ['Inter', 'system-ui', '-apple-system', 'sans-serif'],
},
},
},
}
</script>
<style type="text/tailwindcss">
html, body {
height: 100%;
}
body {
display: flex;
flex-direction: column;
min-height: 100vh;
}
@layer components {
.btn-primary {
@apply bg-indigo-600 text-white py-2.5 px-7 rounded-lg hover:bg-indigo-700 transition duration-200 inline-block text-center font-medium text-sm;
}

.header {
@apply bg-white border-b border-gray-200 p-8 text-center dark:bg-gray-900 dark:border-gray-700;
}

.footer {
@apply border-t border-gray-100 p-6 text-center mt-auto dark:border-gray-700;
}
}
</style>
</head>
<body class="bg-stone-50 dark:bg-gray-900 px-2 sm:px-4 font-sans dark:text-gray-200">
<main class="flex-1 flex flex-col">
<header class="header">
<div class="flex items-center justify-between max-w-3xl mx-auto">
<span></span>
<div class="text-center">
<h1 class="text-3xl font-semibold tracking-tight text-gray-900 dark:text-white">Training</h1>
<p class="mt-2 text-base text-gray-500 dark:text-gray-400">The page you’re looking for doesn’t exist</p>
</div>
<button id="dark-mode-toggle" class="text-gray-400 hover:text-gray-600 dark:hover:text-gray-300 transition" aria-label="Toggle dark mode">
<svg id="icon-sun" class="w-5 h-5 hidden" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" d="M12 3v1m0 16v1m8.66-13.66l-.71.71M4.05 19.95l-.71.71M21 12h-1M4 12H3m16.66 7.66l-.71-.71M4.05 4.05l-.71-.71M16 12a4 4 0 11-8 0 4 4 0 018 0z"/></svg>
<svg id="icon-moon" class="w-5 h-5" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" d="M21 12.79A9 9 0 1111.21 3a7 7 0 009.79 9.79z"/></svg>
</button>
</div>
</header>

<section class="max-w-3xl mx-auto w-full mt-10 mb-8 px-4">
<div class="bg-white dark:bg-gray-800 border border-gray-200 dark:border-gray-700 rounded-xl p-8 text-center">
<p class="text-xs uppercase tracking-wide text-gray-400">Error</p>
<p class="mt-3 text-5xl font-semibold tracking-tight text-gray-900 dark:text-white">404</p>
<p class="mt-3 text-sm text-gray-600 dark:text-gray-400">
This URL doesn’t match any page on this site. You can go back to the homepage.
</p>
<div class="mt-8">
<a class="btn-primary" href="index.html">Back to home</a>
</div>
</div>
</section>
</main>

<script>
(function () {
const toggle = document.getElementById("dark-mode-toggle");
const iconSun = document.getElementById("icon-sun");
const iconMoon = document.getElementById("icon-moon");
function applyTheme(dark) {
document.documentElement.classList.toggle("dark", dark);
iconSun.classList.toggle("hidden", !dark);
iconMoon.classList.toggle("hidden", dark);
}
const stored = localStorage.getItem("theme");
const prefersDark = window.matchMedia("(prefers-color-scheme: dark)").matches;
applyTheme(stored === "dark" || (!stored && prefersDark));
toggle.addEventListener("click", function () {
const isDark = document.documentElement.classList.toggle("dark");
localStorage.setItem("theme", isDark ? "dark" : "light");
iconSun.classList.toggle("hidden", !isDark);
iconMoon.classList.toggle("hidden", isDark);
});
})();
</script>

<footer class="footer">
<p class="text-gray-500 dark:text-gray-400 text-sm">
Help improve the questionnaires:
<a
href="https://github.com/efficience-it/efficience-it.github.io"
class="text-gray-500 hover:text-gray-700 dark:text-gray-400 dark:hover:text-gray-300 underline"
>This Website</a
>
&middot;
<a
href="https://github.com/efficience-it/docker-practice"
class="text-gray-500 hover:text-gray-700 dark:text-gray-400 dark:hover:text-gray-300 underline"
>Docker&reg; Questions</a
>
</p>
<p class="text-[10px] text-gray-300 mt-2">Docker&reg; and the Docker&reg; logo are trademarks or registered trademarks of Docker, Inc. in the United States and/or other countries.</p>
</footer>
</body>
</html>