diff --git a/app.css b/index.css
similarity index 97%
rename from app.css
rename to index.css
index 074e911..bfc55d0 100644
--- a/app.css
+++ b/index.css
@@ -2,7 +2,7 @@ html {
   box-sizing: border-box;
 }
 
-*, *:before, *:after {
+* {
   box-sizing: inherit;
 }
 
diff --git a/index.html b/index.html
index 23070bf..44d77b5 100644
--- a/index.html
+++ b/index.html
@@ -3,14 +3,13 @@
   <head>
     <meta charset="utf-8">
     <title>Pixel Art Maker</title>
-    <link rel="stylesheet" type="text/css" href="app.css" />
+    <script defer src="index.js"></script>
+    <link rel="stylesheet" href="index.css" />
   </head>
   <body>
     <main>
       <div id="canvas"></div>
       <div id="palette"></div>
     </main>
-
-    <script src="app.js"></script>
   </body>
 </html>
diff --git a/app.js b/index.js
similarity index 100%
rename from app.js
rename to index.js
