diff --git a/errors/401.html b/errors/401.html
new file mode 100644
index 0000000..8b7d3f0
--- /dev/null
+++ b/errors/401.html
@@ -0,0 +1,27 @@
+<!doctype html>
+<html lang="en">
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <link rel="stylesheet" href="/assets/css/style.css">
+    <link rel="icon" href="/favicon.png" type="image/png" />
+
+    <title>401!</title>
+</head>
+
+<body>
+<div class="content">
+    <h1>401!</h1>
+    <h2>401 - Unauthorized</h2>
+    <h2><a href="/index.html">Return to the index!</a></h2>
+    <h4><a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/401">Learn more about this code.</a> </h4>
+
+</div>
+<div class="clouds">
+    <img src="/assets/images/clouds.png" alt="Clouds">
+</div>
+
+<canvas id="night"></canvas>
+<script src="/assets/js/script.js" defer></script>
+</body>
+</html>
diff --git a/errors/403.html b/errors/403.html
new file mode 100644
index 0000000..5ff8d4a
--- /dev/null
+++ b/errors/403.html
@@ -0,0 +1,27 @@
+<!doctype html>
+<html lang="en">
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <link rel="stylesheet" href="/assets/css/style.css">
+    <link rel="icon" href="/favicon.png" type="image/png" />
+
+    <title>403!</title>
+</head>
+
+<body>
+<div class="content">
+    <h1>403!</h1>
+    <h2>403 - Forbidden</h2>
+    <h2><a href="/index.html">Return to the index!</a></h2>
+    <h4><a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/403">Learn more about this code.</a> </h4>
+
+</div>
+<div class="clouds">
+    <img src="/assets/images/clouds.png" alt="Clouds">
+</div>
+
+<canvas id="night"></canvas>
+<script src="/assets/js/script.js" defer></script>
+</body>
+</html>
diff --git a/errors/404.html b/errors/404.html
new file mode 100644
index 0000000..499385f
--- /dev/null
+++ b/errors/404.html
@@ -0,0 +1,27 @@
+<!doctype html>
+<html lang="en">
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <link rel="stylesheet" href="/assets/css/style.css">
+    <link rel="icon" href="/favicon.png" type="image/png" />
+
+    <title>404!</title>
+</head>
+
+<body>
+<div class="content">
+    <h1>404!</h1>
+    <h2>404 - Page not found</h2>
+    <h2><a href="/index.html">Return to the index!</a></h2>
+    <h4><a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/404">Learn more about this code.</a> </h4>
+
+</div>
+<div class="clouds">
+    <img src="/assets/images/clouds.png" alt="Clouds">
+</div>
+
+<canvas id="night"></canvas>
+<script src="/assets/js/script.js" defer></script>
+</body>
+</html>
diff --git a/errors/500.html b/errors/500.html
new file mode 100644
index 0000000..567766c
--- /dev/null
+++ b/errors/500.html
@@ -0,0 +1,27 @@
+<!doctype html>
+<html lang="en">
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <link rel="stylesheet" href="/assets/css/style.css">
+    <link rel="icon" href="/favicon.png" type="image/png" />
+
+    <title>500!</title>
+</head>
+
+<body>
+<div class="content">
+    <h1>500!</h1>
+    <h2>500 - Internal Server Error</h2>
+    <h2><a href="/index.html">Return to the index!</a></h2>
+    <h4><a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/500">Learn more about this code.</a> </h4>
+
+</div>
+<div class="clouds">
+    <img src="/assets/images/clouds.png" alt="Clouds">
+</div>
+
+<canvas id="night"></canvas>
+<script src="/assets/js/script.js" defer></script>
+</body>
+</html>
diff --git a/errors/502.html b/errors/502.html
new file mode 100644
index 0000000..f81bba1
--- /dev/null
+++ b/errors/502.html
@@ -0,0 +1,27 @@
+<!doctype html>
+<html lang="en">
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <link rel="stylesheet" href="/assets/css/style.css">
+    <link rel="icon" href="/favicon.png" type="image/png" />
+
+    <title>502</title>
+</head>
+
+<body>
+<div class="content">
+    <h1>502!</h1>
+    <h2>502 - Bad gateway</h2>
+    <h2><a href="/index.html">Return to the index!</a></h2>
+    <h4><a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/502">Learn more about this code.</a> </h4>
+
+</div>
+<div class="clouds">
+    <img src="/assets/images/clouds.png" alt="Clouds">
+</div>
+
+<canvas id="night"></canvas>
+<script src="/assets/js/script.js" defer></script>
+</body>
+</html>
