Improve styles
diff --git a/index.html b/index.html
index fb19254..1892d74 100644
--- a/index.html
+++ b/index.html
@@ -1,6 +1,9 @@
 <!DOCTYPE html>
 <html>
+<head>
 <title>Units</title>
+<link rel="stylesheet" href="styles.css">
+</head>
 <body>
 <div id="app">
 </div>