<div class="gn_box">
    <h3><center><font color=#FF0000>寒假倒计时</font>
    </center></h3>
    <center>
        <div id="CountMsg" class="HotDate">
            <span id="t_d">157 天</span>
            <span id="t_h">9 时</span>
            <span id="t_m">7 分</span>
            <span id="t_s">42 秒</span>
        </div>
    </center>
    <script type="text/javascript"> function getRTime() {
        var EndTime = new Date("2023/01/7 00:00:00");
        var NowTime = new Date();
        var t = EndTime.getTime() - NowTime.getTime();
        var d = Math.floor(t / 1000 / 60 / 60 / 24);
        var h = Math.floor(t / 1000 / 60 / 60 % 24);
        var m = Math.floor(t / 1000 / 60 % 60);
        var s = Math.floor(t / 1000 % 60);
        document.getElementById("t_d").innerHTML = d + " 天";
        document.getElementById("t_h").innerHTML = h + " 时";
        document.getElementById("t_m").innerHTML = m + " 分";
        document.getElementById("t_s").innerHTML = s + " 秒";

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</div>