From 5f5364ad73dc6c31e1e189596f407970f852701a Mon Sep 17 00:00:00 2001
From: Jay Weisskopf <jay@jayschwa.net>
Date: Sun, 9 Dec 2018 12:51:28 -0500
Subject: [PATCH] font-family fallbacks for unsupported system-ui

---
 doc/langref.html.in | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/doc/langref.html.in b/doc/langref.html.in
index 7f3485289c..a1903331a4 100644
--- a/doc/langref.html.in
+++ b/doc/langref.html.in
@@ -8,7 +8,13 @@
       body{
         background-color:#111;
         color: #bbb;
-        font-family: system-ui, sans-serif;
+        font-family: system-ui,
+          /* Fallbacks for browsers that don't support system-ui */
+          /* https://caniuse.com/#search=system-ui */
+          -apple-system, /* iOS and macOS */
+          Roboto,        /* Android */
+          "Segoe UI",    /* Windows */
+          sans-serif;
       }
       a {
         color: #88f;