diff --git a/packages/core/src/Editor.ts b/packages/core/src/Editor.ts
index 9c32156f..63a3d9b0 100644
--- a/packages/core/src/Editor.ts
+++ b/packages/core/src/Editor.ts
@@ -8,7 +8,6 @@ import { dropCursor } from 'prosemirror-dropcursor'
 import { gapCursor } from 'prosemirror-gapcursor'
 import magicMethods from './utils/magicMethods'
 import elementFromString from './utils/elementFromString'
-import injectCSS from './utils/injectCSS'
 import getAllMethodNames from './utils/getAllMethodNames'
 import nodeIsActive from './utils/nodeIsActive'
 import markIsActive from './utils/markIsActive'
@@ -72,7 +71,7 @@ export class Editor extends EventEmitter {
     this.registerCommand('removeMarks', require('./commands/removeMarks').default)
     
     if (this.options.injectCSS) {
-      this.css = injectCSS(require('./style.css'))
+      require('./style.css')
     }
   }
 
diff --git a/packages/core/src/utils/injectCSS.ts b/packages/core/src/utils/injectCSS.ts
deleted file mode 100644
index a9c073ce..00000000
--- a/packages/core/src/utils/injectCSS.ts
+++ /dev/null
@@ -1,13 +0,0 @@
-export default function injectCSS(css: string) {
-  const style = document.createElement('style')
-  style.type = 'text/css'
-  style.textContent = css
-  const { head } = document
-  const { firstChild } = head
-
-  if (firstChild) {
-    return head.insertBefore(style, firstChild)
-  } else {
-    return head.appendChild(style)
-  }
-}