<!DOCTYPE html>
<html lang="ja">
<head>
<link rel="stylesheet" type="text/css" href="countdown.css">
<script type="text/javascript" src="countdown.js" charset="utf-8"></script>
<title>爆発ボタン</title>
</head>
<body>
<h1 style="text-align:center">あたりを押せ!!!!</h1>
<button id="begin">始め!</button>
<p id="message"></p>
<div class="box1"><p>1</p></div>
<div class="box1"><p>2</p></div>
<div class="box1"><p>3</p></div>
<div class="box1"><p>4</p></div>
<div class="box1"><p>5</p></div>
<div class="box1"><p>6</p></div>
<div class="box1"><p>7</p></div>
<div class="box1"><p>8</p></div>
<div class="box1"><p>9</p></div>
<div class="box1"><p>10</p></div>
</body>
</html>
Sugawara Ayano