fix: remove scrollbar-gutter

* chore: increment package version to 1.0.4

Author: mjfwebb

package.json

@@ -1,7 +1,7 @@
 {
   "name": "twitch-chat",
   "private": true,
-  "version": "1.0.3",
+  "version": "1.0.4",
   "type": "module",
   "scripts": {
     "dev": "vite",

src/App.css

@@ -7,10 +7,6 @@ body {
   padding: 0;
 }
 
-html {
-  scrollbar-gutter: stable;
-}
-
 main {
   max-width: 800px;
   margin: 40px auto;