diff --git a/modules/purchase_trade/process_documentation.py b/modules/purchase_trade/process_documentation.py
index 0f1a74b..77c9814 100644
--- a/modules/purchase_trade/process_documentation.py
+++ b/modules/purchase_trade/process_documentation.py
@@ -22,7 +22,15 @@ class ProcessDocumentation(ModelSingleton, ModelSQL, ModelView):
 
     content = fields.Function(fields.Text('Content'), 'get_content')
 
+    @staticmethod
+    def default_content():
+        return _html_content()
+
     def get_content(self, name):
+        return _html_content()
+
+
+def _html_content():
         return HTML_TEMPLATE % {
             'content': _documentation_content(),
             }
@@ -183,48 +191,8 @@ def _render_table(lines, current_file):
     return ''.join(output)
 
 
-HTML_TEMPLATE = '''<!DOCTYPE html>
-<html>
-<head>
-    <meta charset="utf-8"/>
-    <style>
-        body {
-            color: #1f2933;
-            font-family: Arial, sans-serif;
-            line-height: 1.5;
-            margin: 0;
-            padding: 24px;
-        }
-        a {
-            color: #0b63ce;
-            text-decoration: none;
-        }
-        a:hover {
-            text-decoration: underline;
-        }
-        table {
-            border-collapse: collapse;
-            margin: 16px 0;
-            width: 100%%;
-        }
-        th,
-        td {
-            border: 1px solid #d7dde5;
-            padding: 8px 10px;
-            text-align: left;
-            vertical-align: top;
-        }
-        th {
-            background: #f3f6f9;
-        }
-        img {
-            height: auto;
-            max-width: 100%%;
-        }
-    </style>
-</head>
-<body>
-    <main>%(content)s</main>
-</body>
-</html>
+HTML_TEMPLATE = '''<div style="color: #1f2933; font-family: Arial, sans-serif;
+line-height: 1.5; padding: 24px;">
+    %(content)s
+</div>
 '''
