Add note for including CSS file

rugk · rugk · commit 4a86ad585371 · 2021-11-28T22:52:48.000+01:00
diff --git a/README.md b/README.md
@@ -217,6 +217,8 @@ Doc is TODO…
 
 In the file [`css/photonOptions.css`], there is a style for a Firefox/[Photon](https://design.firefox.com/photon/)-style appearance of the settings.
 
+To ub eble se the CSS file, you need to include the `common.css` from [`CommonCss`](https://github.com/TinyWebEx/CommonCss).
+
 Here is the corresponding HTML, if you want to use it:
 ```html
 <body>
