<!DOCTYPE html>
<html lang="ja">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>解答例</title>
    <style>
        @media print {
            body { display: none }
        }
        
        img {
            /* SPの長押し禁止 */
            -webkit-touch-callout: none;
            -webkit-user-select: none;
            -moz-touch-callout: none;
            -moz-user-select: none;
            user-select: none;

            /* PCの右クリック禁止 */
            pointer-events: none;

            /* 画像の幅 */
            width: 95%;
            max-width: 700px;
        }

        .title {
            font-family: Meiryo, Hiragino Sans, ヒラギノ角ゴシック, Arial, sans-serif;
            font-size: 1em;
            margin-bottom: 20px;
        }

        .container {
            text-align: center;
            margin-top: 20px;
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="title">第<span id="test-number"></span>回小テスト</div>
        <img id="test-image" onselectstart="return false;" onmousedown="return false;">
    </div>
    <script>
        // URLパラメータからnumberを取得する
        var url = location.search;
        var params = new URLSearchParams(url);
        var number = params.get('number');

        // numberパラメータを利用してHTMLを更新
        document.getElementById("test-number").innerHTML = number;
        document.getElementById("test-image").src = `http://tren.html.xdomain.jp/gakugei0721/images/${number}.JPG`;
    </script>
</body>