diff --git a/error/404.html b/error/404.html
new file mode 100644
index 0000000..0ed819f
--- /dev/null
+++ b/error/404.html
@@ -0,0 +1,251 @@
+<!DOCTYPE html>
+<html lang="en" dir="ltr">
+
+<head>
+	<meta charset="utf-8">
+	<meta name="viewport" content="width=device-width, initial-scale=1" />
+	<link href="https://fonts.googleapis.com/css?family=Roboto|Roboto+Mono" rel="stylesheet">
+	<link rel="icon" href="/favicon.ico" type="image/x-icon" />
+	<title>Error 404 (Not Found)</title>
+	<style>
+		html,
+		body {
+			margin: 0;
+			padding: 0;
+		}
+
+		body {
+			font-family: 'Roboto', sans-serif;
+			background: #060612;
+			overflow: hidden;
+			height: 100vh;
+			display: flex;
+			flex-direction: column;
+			justify-content: center;
+		}
+
+		@media screen and (max-width: 480px) {
+
+			body,
+			input,
+			select,
+			textarea {
+				font-size: 12pt;
+			}
+		}
+
+		@media screen and (max-width: 480px) {
+
+			html,
+			body {
+				min-width: 320px;
+			}
+		}
+
+		@media screen and (max-width: 736px) {
+
+			body,
+			input,
+			select,
+			textarea {
+				font-size: 12pt;
+			}
+		}
+
+
+		/*
+		@media screen and (max-width: 736px) {
+
+			html,
+			body {
+				overflow-x: hidden;
+			}
+		}
+*/
+
+		@media screen and (max-width: 980px) {
+
+			body,
+			input,
+			select,
+			textarea {
+				font-size: 12pt;
+			}
+		}
+
+		@media screen and (max-width: 1280px) {
+
+			body,
+			input,
+			select,
+			textarea {
+				font-size: 11.5pt;
+			}
+		}
+
+		@media screen and (max-width: 1680px) {
+
+			body,
+			input,
+			select,
+			textarea {
+				font-size: 13pt;
+			}
+		}
+
+		.content {
+			margin: 4em auto;
+			margin-bottom: 18em;
+			width: 45%;
+			color: #ffffff;
+
+			display: flex;
+		}
+
+		.content>.info {
+			font-size: 1.25em;
+			line-height: 1.75em;
+		}
+
+		.content>.info>.logo {
+			position: relative;
+			height: 10em;
+		}
+
+		.content>.info>.logo>a>img {
+			width: 10em;
+			height: 10em;
+		}
+
+		.content>.info>.short {
+			margin: 1em 0;
+		}
+
+		.content>.info>.short>.container>b {
+			margin-right: 0.5em;
+		}
+
+		.content>.info>.explanation {
+			margin: 1em 0;
+		}
+
+		.content>.info>.explanation>p>code {
+			color: #9535fc;
+			font-family: 'Roboto Mono', monospace;
+		}
+
+		.content>.info>.explanation>p>span {}
+
+		.content>.robot {
+			height: 100%;
+			display: flex;
+		}
+
+		.content>.robot>svg {
+			display: inline-block;
+			align-self: flex-end;
+			fill: #ffffff;
+			width: 15em;
+			height: 15em;
+		}
+
+		@media screen and (max-width: 1680px) {
+
+			.content {
+				width: 55%;
+			}
+		}
+
+		@media only screen and (max-width: 980px) {
+			.content {
+				width: 100%;
+			}
+
+			.content>.info {
+				margin: auto;
+				width: 65%;
+			}
+
+			.content>.info>.logo {
+				height: 14em;
+			}
+
+			.content>.info>.logo>a {
+				position: absolute;
+				left: 50%;
+				transform: translateX(-50%);
+			}
+
+			.content>.info>.logo>a>img {
+				width: 14em;
+				height: 14em;
+			}
+
+			.content>.info>.short {
+				position: relative;
+				height: 1.75em;
+			}
+
+			.content>.info>.short>.container {
+				position: absolute;
+				left: 50%;
+				transform: translateX(-50%);
+			}
+
+			.content>.robot {
+				display: none;
+			}
+		}
+
+		@media only screen and (max-width: 736px) {
+			.content>.info {
+				font-size: 1em;
+			}
+
+			.content>.info>.logo {
+				height: 10em;
+			}
+
+			.content>.info>.logo>a>img {
+				width: 10em;
+				height: 10em;
+			}
+		}
+	</style>
+</head>
+
+<body>
+	<div id="content" class="content">
+		<div class="info">
+			<div class="logo">
+				<a href="/"><img src="/assets/logo.svg" alt=""></a>
+			</div>
+			<div class="short">
+				<div class="container">
+					<b>404.</b><span>That's an error</span>
+				</div>
+			</div>
+			<div class="explanation">
+				<p>The requested URL <code>/sdfghbndfgh</code> was not found on this server. <span>That’s all we know.</span></p>
+			</div>
+		</div>
+		<div class="robot">
+			<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 1000 1000">
+				<title>Robot</title>
+				<g>
+					<g transform="translate(0.000000,512.000000) scale(0.100000,-0.100000)">
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+						<path d="M5461.7,3484.1c-386.9-193.5-247.1-775.8,187.8-779.7c312.2-1.9,511.5,308.4,377.4,590c-51.7,113-88.1,147.5-203,199.2C5703,3549.2,5586.2,3545.4,5461.7,3484.1z" />
+						<path d="M4616.9,2470.7c-13.4-15.3-23-49.8-23-76.6c0-101.5,17.3-105.4,406.1-105.4c390.8,0,408,3.8,408,109.2c0,91.9-40.2,101.5-419.5,101.5C4703.1,2499.5,4636,2493.7,4616.9,2470.7z" />
+						<path d="M4559.4,277.3V162.4h421.4h421.4v114.9v114.9h-421.4h-421.4V277.3z" />
+						<path d="M4559.4-125v-134.1h421.4h421.4V-125V9.1h-421.4h-421.4V-125z" />
+						<path d="M4559.4-565.6v-114.9h421.4h421.4v114.9v115h-421.4h-421.4V-565.6z" />
+					</g>
+				</g>
+			</svg>
+		</div>
+	</div>
+</body>
+
+</html>
