Don't use external fonts
Copies from Medium's system font stack:
https://medium.design/system-shock-6b1dc6d6596f
diff --git a/static/css/style.scss b/static/css/style.scss
index 5bb3565..21212cb 100644
--- a/static/css/style.scss
+++ b/static/css/style.scss
@@ -14,9 +14,8 @@
$accent: #0e94ec;
$danger: red;
-@import url(https://fonts.googleapis.com/css?family=Roboto|Roboto+Mono);
-$sans: 'Roboto', sans-serif;
-$mono: 'Roboto Mono';
+$sans: -apple-system, ".SFNSText-Regular", "San Francisco", "Roboto", "Segoe UI", "Helvetica Neue", "Lucida Grande", sans-serif;
+$mono: monospace;
$border_color: #c2c2c2;
$pag_label_size: 60px;