From 33f293120d1e43c52e24709ad5f7f0e3189cf0ee Mon Sep 17 00:00:00 2001
From: Ronan Jouchet <ronan@jouchet.fr>
Date: Wed, 28 Jul 2021 08:10:31 -0400
Subject: [PATCH] API.md: document need to use CSS "!important" keyword (fix
 #1264)

---
 API.md | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/API.md b/API.md
index c76bbfd..30bab46 100644
--- a/API.md
+++ b/API.md
@@ -659,9 +659,11 @@ Example `shortcuts.json` for `https://deezer.com` & `https://soundcloud.com` to
 --inject <value>
 ```
 
-Allows you to inject javascript or css files. This command can be repeated multiple times to inject multiple files.
+Allows you to inject JavaScript or CSS files. This command can be repeated multiple times to inject multiple files.
 
-_Note:_ The javascript file is loaded _after_ `DOMContentLoaded`, so you can assume the DOM is complete & available.
+_Note about JS injection:_ injected JS is loaded _after_ `DOMContentLoaded`, so you can assume the DOM is complete & available.
+
+_Note about CSS injection:_ to override existing CSS rules, you need to use the `!important` CSS keyword. Example: `#id_to_hide { display: none !important; }` , not just `#id_to_hide { display: none; }` .
 
 Example: