defult.html

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title>タイトルタブ</title>
        <style>
        </style>
    </head>
    <body>
        <div style="margin: 50px 0px 0px 50px;">
            <h1>タイトル</h1>
        </div>
        <br>
        <p style="text-align: center; background-color: gray; border-radius: 30px; margin: 0px 600px; padding: 100px 0px;">
            概要
        </p>
        <div style="text-align: center;">
                <button onclick="location.href='login.html'" id="Login" style="position: relative; top: 50px; background-color: bisque; border-radius: 10px; font-size: 30px">ログイン</button>
                <button onclick="location.href='register.html'" id="Register" style="position: relative; top: 50px; background-color: bisque; border-radius: 10px; font-size: 30px">新規会員登録</button>
        </div>
    </body>
</html>