<!DOCTYPE html>
<html lang="ja">
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="bakudan.css">
</head>
<body>
<button id="startButton">start</button>
<div id="countdown">3秒前</div>
<div id="result"></div>
<div id="boxes">
<div class="box">1</div>
<div class="box">2</div>
<div class="box">3</div>
<div class="box">4</div>
<div class="box">5</div>
<div class="box">6</div>
<div class="box">7</div>
<div class="box">8</div>
<div class="box">9</div>
<div class="box">10</div>
</div>
<script src="bakudan.js"></script>
</body>
</html>
