diff --git a/public/406-unsupported-browser.html b/public/406-unsupported-browser.html
new file mode 100644
index 00000000..c712439e
--- /dev/null
+++ b/public/406-unsupported-browser.html
@@ -0,0 +1,97 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <title>Your browser is not supported (426)</title>
+  <meta name="viewport" content="width=device-width,initial-scale=1">
+  <style>
+  .rails-default-error-page {
+    background-color: #EFEFEF;
+    color: #2E2F30;
+    text-align: center;
+    font-family: arial, sans-serif;
+    margin: 0;
+  }
+
+  .rails-default-error-page div.dialog {
+    width: 95%;
+    max-width: 50em;
+    margin: 4em auto 0;
+  }
+
+  .rails-default-error-page div.dialog > div {
+    border: 1px solid #CCC;
+    border-right-color: #999;
+    border-left-color: #999;
+    border-bottom-color: #BBB;
+    border-top: #B00100 solid 4px;
+    border-top-left-radius: 9px;
+    border-top-right-radius: 9px;
+    background-color: white;
+    padding: 7px 12% 0;
+    box-shadow: 0 3px 8px rgba(50, 50, 50, 0.17);
+  }
+
+  .rails-default-error-page h1 {
+    font-size: 100%;
+    color: #730E15;
+    line-height: 1.5em;
+  }
+
+  .rails-default-error-page div.dialog > p {
+    margin: 0 0 1em;
+    padding: 1em;
+    background-color: #F7F7F7;
+    border: 1px solid #CCC;
+    border-right-color: #999;
+    border-left-color: #999;
+    border-bottom-color: #999;
+    border-bottom-left-radius: 4px;
+    border-bottom-right-radius: 4px;
+    border-top-color: #DADADA;
+    color: #666;
+    box-shadow: 0 3px 8px rgba(50, 50, 50, 0.17);
+  }
+
+  .browser-links {
+      display: inline-block;
+      margin: 10px 0;
+    }
+
+    .browser-links a {
+      color: #007bff;
+      text-decoration: none;
+      padding: 0 10px;
+    }
+
+    .browser-links a:hover {
+      text-decoration: underline;
+    }
+
+    .separator {
+      padding: 0 5px;
+    }
+  </style>
+</head>
+
+<body class="rails-default-error-page">
+  <!-- This file lives in public/426.html -->
+  <div class="dialog">
+    <div>
+      <h1>Your browser is not supported.</h1>
+      <p>To continue using our site, please upgrade your browser to a modern version.</p>
+      <p>We recommend using the following browsers:</p>
+      <div class="browser-links">
+        <a href="https://www.google.com/chrome/" target="_blank">Google Chrome</a>
+        <span class="separator">|</span>
+        <a href="https://www.mozilla.org/firefox/" target="_blank">Mozilla Firefox</a>
+        <span class="separator">|</span>
+        <a href="https://www.microsoft.com/edge/" target="_blank">Microsoft Edge</a>
+        <span class="separator">|</span>
+        <a href="https://www.apple.com/safari/" target="_blank">Safari</a>
+        <span class="separator">|</span>
+        <a href="https://www.opera.com/" target="_blank">Opera</a>
+      </div>
+    </div>
+  </div>
+</body>
+</html>
