Updated templates

templates/error/error.html.twig

@@ -2,14 +2,19 @@
 
 {% block title %}{{ status }} {{ reason }}{% endblock %}
 
+{% block stylesheets %}
+    <style>
+        p {margin-bottom: 20px;}
+        body {text-align: center;}
+    </style>
+{% endblock %}
+
 {% block content %}
     <h1>Oops!</h1>
-    <h2>This is awkward.</h2>
+    <hr>
     <p>We encountered a {{ status }} {{ reason }} error.</p>
     {% if status == 404 %}
-        <p>
-            You are looking for something that doesn't exist or may have moved. Check out one of the links on this page
-            or head back to <a href="{{ path('home') }}">Home</a>.
-        </p>
+        <p>This short URL doesn't seem to be valid.</p>
+        <p>Make sure you included all the characters, with no extra punctuation.</p>
     {% endif %}
 {% endblock %}