diff --git a/src/gadgets/wikieditor-highlight/MediaWiki:Gadget-wikieditor-highlight.css b/src/gadgets/wikieditor-highlight/MediaWiki:Gadget-wikieditor-highlight.css
deleted file mode 100644
index f82ac709..00000000
--- a/src/gadgets/wikieditor-highlight/MediaWiki:Gadget-wikieditor-highlight.css
+++ /dev/null
@@ -1,21 +0,0 @@
-#wikiEditor-ui-toolbar .menu {
-    position: relative;
-    z-index: 5;
-}
-
-.CodeMirror pre {
-    font-family: Monaco, Menlo, "Ubuntu Mono", Consolas, source-code-pro, monospace;
-}
-
-#wpTextbox1+.CodeMirror {
-    font-size: 13px;
-    line-height: 1.5;
-}
-
-.CodeMirror-matchingbracket {
-    box-shadow: 0 0 0 2px #9aef98;
-}
-
-.CodeMirror-nonmatchingbracket {
-    box-shadow: 0 0 0 2px #eace64;
-}