diff --git a/templates/l7.html b/templates/l7.html
new file mode 100644
index 0000000..5477419
--- /dev/null
+++ b/templates/l7.html
@@ -0,0 +1,171 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="utf-8">
+  <meta name="robots" content="nofollow,noarchive,noindex">
+  <title>{{ message }}</title>
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <!-- {{ if or (eq code 408) (eq code 425) (eq code 429) (eq code 500) (eq code 502) (eq code 503) (eq code 504) }} -->
+  <meta http-equiv="refresh" content="30"/>
+  <!-- {{ end }} -->
+  <meta name="title" content="{{ code }}: {{ message }}">
+  <meta name="description" content="{{ description }}">
+  <meta property="og:title" content="{{ code }}: {{ message }}">
+  <meta property="og:description" content="{{ description }}">
+  <meta property="twitter:title" content="{{ code }}: {{ message }}">
+  <meta property="twitter:description" content="{{ description }}">
+  <style>
+    :root {
+      --color-primary: #f7fafc;
+      --color-inverted: #a0aec0;
+    }
+
+    @media (prefers-color-scheme: dark) {
+      :root {
+        --color-primary: #222526;
+        --color-inverted: #fff;
+      }
+    }
+
+    html, body {
+      margin: 0;
+      padding: 0;
+      min-height: 100%;
+      height: 100%;
+      width: 100%;
+      background-color: var(--color-primary);
+      color: var(--color-inverted);
+      font-family: sans-serif;
+      font-size: 16px;
+    }
+
+    @media screen and (min-width: 2000px) {
+      html, body {
+        font-size: 20px;
+      }
+    }
+
+    body {
+      display: flex;
+      justify-content: center;
+      align-items: center;
+    }
+
+    main {
+      display: flex;
+      flex-direction: column;
+    }
+
+    article {
+      display: flex;
+      align-items: center;
+      justify-content: center;
+    }
+
+    article .code h1, article .desc p {
+      font-size: 1.7em;
+      margin: 0;
+      padding: 0;
+    }
+
+    article .code {
+      border-right: 2px solid;
+      padding: 0.12em 0.7em;
+      margin: 0;
+      text-align: right;
+    }
+
+    article .code h1 {
+      font-weight: normal;
+    }
+
+    article .desc {
+      text-align: left;
+      padding: 0.7em;
+    }
+
+    article .desc p {
+      font-weight: lighter;
+      text-transform: uppercase;
+    }
+
+    /* {{ if show_details }} */
+    ul.details {
+      list-style: none;
+      margin: 1.2em 0 0 0;
+      padding: 0;
+      font-size: 0.8em;
+    }
+
+    ul.details li.name::first-letter {
+      font-weight: bold;
+    }
+
+    ul.details li.value {
+      font-family: monospace;
+    }
+    /* {{ end }} */
+  </style>
+</head>
+<body>
+
+<main>
+  <article>
+    <div class="code">
+      <h1>{{ code }}</h1>
+      <!-- {{- if show_details -}} -->
+      <ul class="details">
+        <!-- {{- if host -}} -->
+        <li class="name" data-l10n>Host</li>
+        <!-- {{- end }}{{ if original_uri -}} -->
+        <li class="name" data-l10n>Original URI</li>
+        <!-- {{- end }}{{ if forwarded_for -}} -->
+        <li class="name" data-l10n>Forwarded for</li>
+        <!-- {{- end }}{{ if namespace -}} -->
+        <li class="name" data-l10n>Namespace</li>
+        <!-- {{- end }}{{ if ingress_name -}} -->
+        <li class="name" data-l10n>Ingress name</li>
+        <!-- {{- end }}{{ if service_name -}} -->
+        <li class="name" data-l10n>Service name</li>
+        <!-- {{- end }}{{ if service_port -}} -->
+        <li class="name" data-l10n>Service port</li>
+        <!-- {{- end }}{{ if request_id -}} -->
+        <li class="name" data-l10n>Request ID</li>
+        <!-- {{- end -}} -->
+        <li class="name" data-l10n>Timestamp</li>
+      </ul>
+      <!-- {{- end -}} -->
+    </div>
+    <div class="desc">
+      <p data-l10n>{{ message }}</p>
+      <!-- {{- if show_details -}} -->
+      <ul class="details">
+        <!-- {{- if host -}} -->
+        <li class="value">{{ host }}</li>
+        <!-- {{- end }}{{ if original_uri -}} -->
+        <li class="value">{{ original_uri }}</li>
+        <!-- {{- end }}{{ if forwarded_for -}} -->
+        <li class="value">{{ forwarded_for }}</li>
+        <!-- {{- end }}{{ if namespace -}} -->
+        <li class="value">{{ namespace }}</li>
+        <!-- {{- end }}{{ if ingress_name -}} -->
+        <li class="value">{{ ingress_name }}</li>
+        <!-- {{- end }}{{ if service_name -}} -->
+        <li class="value">{{ service_name }}</li>
+        <!-- {{- end }}{{ if service_port -}} -->
+        <li class="value">{{ service_port }}</li>
+        <!-- {{- end }}{{ if request_id -}} -->
+        <li class="value">{{ request_id }}</li>
+        <!-- {{- end -}} -->
+        <li class="value">{{ now.Unix }}</li>
+      </ul>
+      <!-- {{- end -}} -->
+    </div>
+  </article>
+</main>
+
+<!-- {{- if l10n_enabled -}} -->
+<script> // {{ l10nScript }}</script>
+<!-- {{- end -}} -->
+</body>
+</html>
