diff --git a/input/error/400.html b/input/error/400.html
new file mode 100644
index 0000000..91031eb
--- /dev/null
+++ b/input/error/400.html
@@ -0,0 +1,6 @@
+[//]: # "Title: Malformed Request"
+
+<div class="err">
+    <h1>Malformed Request</h1>
+    <p>The server received a malformed request.</p>
+</div>
diff --git a/input/error/401.html b/input/error/401.html
new file mode 100644
index 0000000..567f97f
--- /dev/null
+++ b/input/error/401.html
@@ -0,0 +1,6 @@
+[//]: # "Title: Client Unauthenticated"
+
+<div class="err">
+    <h1>Client Unauthenticated</h1>
+    <p>Authentication is required to access this resource.</p>
+</div>
diff --git a/input/error/405.html b/input/error/405.html
new file mode 100644
index 0000000..70bb363
--- /dev/null
+++ b/input/error/405.html
@@ -0,0 +1,6 @@
+[//]: # "Title: Request Method Disallowed"
+
+<div class="err">
+    <h1>Request Method Disallowed</h1>
+    <p>The request method for this resource has been disallowed.</p>
+</div>