Add listings

Listing_10.46.html

@@ -0,0 +1,11 @@
+{% extends "layout.html" %}
+
+{% block content %}
+  <h1>Palindrome Detector</h1>
+
+  <form id="palindrome_tester" action="/check" method="post">
+    <textarea name="phrase" rows="10" cols="60"></textarea>
+    <br>
+    <button class="form-submit" type="submit">Is it a palindrome?</button>
+  </form>
+{% endblock %}