Update default.css

static/css/default.css

@@ -1,4 +1,4 @@
-@import url(https://fonts.googleapis.com/css?family=Roboto);
+@import url(https://fonts.googleapis.com/css?family=Roboto&subset=latin,cyrillic,latin-ext);
 
 html, body {
     margin: 5px;