我需要一个60秒后自动刷新网页的代码并且有一行文字告诉我剩余时间请直接给出代码无需进行说明

<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="refresh" content="60">
</head>
<body>
    <span id="countdown"></span>
    <script>
        var seconds = 60;
        function countdown() {
            seconds--;
            document.getElementById("countdown").innerHTML = "剩余时间：" + seconds + "秒";
            if (seconds == 0) {
                clearInterval(countdownInterval);
            }
        }
        var countdownInterval = setInterval(countdown, 1000);
    </script>
</body>
</html>