diff --git a/static/main.css b/static/main.css
index ebf4efc0..3c03b0eb 100644
--- a/static/main.css
+++ b/static/main.css
@@ -19,13 +19,17 @@ body {
   overflow: hidden;
 }
 
-body {
+.app {
   color: #FFF;
-  font-family: BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Helvetica, sans-serif;
+  font-family: BlinkMacSystemFont, 'Helvetica Neue', Helvetica, sans-serif;
   font-size: 14px;
   line-height: 1.5em;
 }
 
+.app.is-win32 {
+  font-family: 'Segoe UI', sans-serif;
+}
+
 #body {
   width: 100%;
   height: 100%;