diff --git a/src/grids/tests/manual/responsive.html b/src/grids/tests/manual/responsive.html
index 1359c7c..70c9b2e 100644
--- a/src/grids/tests/manual/responsive.html
+++ b/src/grids/tests/manual/responsive.html
@@ -11,10 +11,15 @@
         .content {
             text-align: center;
             border: 1px solid #999;
-            margin: 10px; /*10px 10px 0 0; "column" gutters */
+            margin: 10px;
             padding: 5px;
             font-family: "Lucida Console", Monaco, monospace;
         }
+
+        .serif,
+        .serif .content {
+            font-family: Georgia, Times, "Times New Roman", serif;
+        }
     </style>
 </head>
 
@@ -555,5 +560,46 @@
             </div>
         </div>
     </div>
+
+    <div class="serif">
+        <h1>Custom Font and Grids</h1>
+        <p>
+            Grids with a serif font stack.
+        </p>
+
+        <div class="pure-g-r">
+            <div class="pure-u-1-2">
+                <div class="content">
+                    <div class="pure-g">
+                        <div class="pure-u-1-2">
+                            <div class="content">Nested 1/2</div>
+                        </div>
+                        <div class="pure-u-1-2">
+                            <div class="content">Nested 1/2</div>
+                        </div>
+                    </div>
+                </div>
+            </div>
+
+            <div class="pure-u-1-2">
+                <div class="content">
+                    <div class="pure-g-r">
+                        <div class="pure-u-1-4">
+                            <div class="content">r1/4</div>
+                        </div>
+                        <div class="pure-u-1-4">
+                            <div class="content">r1/4</div>
+                        </div>
+                        <div class="pure-u-1-4">
+                            <div class="content">r1/4</div>
+                        </div>
+                        <div class="pure-u-1-4">
+                            <div class="content">r1/4</div>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
 </body>
 </html>