diff --git a/playground/index.html b/playground/index.html
deleted file mode 100644
index e8ba365..0000000
--- a/playground/index.html
+++ /dev/null
@@ -1,33 +0,0 @@
-<!DOCTYPE html>
-<html lang="ja">
-<head>
-  <meta charset="UTF-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1.0">
-  <meta http-equiv="X-UA-Compatible" content="ie=edge">
-  <title>Document</title>
-</head>
-<body>
-  <a href="#target1" class="plain-scroll">スクロール1</a>
-  <a href="#target2" class="plain-scroll">スクロール2</a>
-  <div id="target1" class="box"></div>
-  <div id="target2" class="box"></div>
-  <style>
-    .box {
-      margin-top: 100vh;
-      height: 100vh;
-      background: #ddd;
-    }
-  </style>
-  <script src="./plain-scroll.js"></script>
-  <script>
-    new PlainScroll({
-      onScrollStart() {
-        alert('Start scroll')
-      },
-      onScrollEnd() {
-        alert('End scroll')
-      }
-    })
-  </script>
-</body>
-</html>
\ No newline at end of file
