404.html

<!DOCTYPE html>
<html lang="en">

<head>
	<title>404</title>
	<style>
		*,
		html {
			margin: 0;
			padding: 0;
			border: 0;
		}

		html {
			width: 100%;
			height: 100%;
		}

		body {
			width: 100%;
			height: 100%;
			position: relative;
			background-color: rgb(0, 0, 0);
		}

		.center {
			width: 100%;
			height: 50%;
			margin: 0;
			position: absolute;
			top: 50%;
			left: 50%;
			transform: translate(-50%, -50%);
			color: white;
			font-family: "Trebuchet MS", Helvetica, sans-serif;
			text-align: center;
		}

		h1 {
			font-size: 144px;
		}

		p {
			font-size: 64px;
		}
	</style>
</head>

<body>
	<meta name="theme-color" content="#000000"/>
	<div class="center">
		<h1>404</h1>
		<p>Not found :(</p>
	</div>
</body>

</html>