diff --git a/src/global.scss b/src/global.scss
index 13d4af3..52357ea 100644
--- a/src/global.scss
+++ b/src/global.scss
@@ -21,6 +21,13 @@
   font-weight: normal;
 }
 
+@supports (-moz-appearance:none) {
+  [lang="ja"],
+  [lang="ja"] * {
+    font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
+  }
+}
+
 @keyframes spin {
   100% {
     transform: rotate(360deg);