diff --git a/src/config.html b/src/config.html
index 40d0229..b914a42 100644
--- a/src/config.html
+++ b/src/config.html
@@ -27,7 +27,7 @@ along with Cockpit; If not, see <http://www.gnu.org/licenses/>.
     <script src="../*/po.js"></script>
 </head>
 
-<body>
+<body class="pf-m-redhat-font">
     <div id="view"></div>
     <script type="text/javascript" src="config.js"></script>
 </body>
diff --git a/src/index.html b/src/index.html
index 720d796..dd67ee8 100644
--- a/src/index.html
+++ b/src/index.html
@@ -28,7 +28,7 @@ along with Cockpit; If not, see <http://www.gnu.org/licenses/>.
   <script src="../*/po.js"></script>
 </head>
 
-<body>
+<body class="pf-m-redhat-font">
   <div id="view"></div>
   <script type="text/javascript" src="recordings.js"></script>
 </body>
