diff --git a/static/css/color-emoji-font.css b/static/css/color-emoji-font.css
index 0f8f7e50..a8285a22 100644
--- a/static/css/color-emoji-font.css
+++ b/static/css/color-emoji-font.css
@@ -1,7 +1,7 @@
 @font-face {
   font-family: "color-emoji";
-  src: local("Apple Color Emoji"),
-       local("Segoe UI Emoji"), 
-       local("Segoe UI Symbol"),
-       local("Noto Color Emoji");
+  src: local("Apple Color Emoji"), /*For macOS and iOS*/
+       local("Segoe UI Emoji"),    /*For Windows 8.1 and greater*/
+       local("Segoe UI Symbol"),   /*For Windows 7*/
+       local("Noto Color Emoji");  /*For Android and Linux with Noto Color Emoji font installed*/
 }
\ No newline at end of file