为handsome博客添加侧边栏倒计时

<style>  .gn_box{     border: none;     border-radius: 10px; }  .gn_box {     padding: 8px 10px;     margin: 8px;     margin-bottom: 15px;     text-align: center;     background-color: ; }  #t_d{     color: grey;     font-size: 18px; }  #t_h{     color: grey;     font-size: 18px; }  #t_m{     color: grey;     font-size: 18px; }  #t_s{     color: grey;     font-size: 18px; }  </style>  <div class="gn_box">      <h3>距2023年高考还有</h3><center> <div id="CountMsg" class="HotDate"><span id="t_d"> 天</span><span id="t_h"> 时</span><span id="t_m"> 分</span><span id="t_s"> 秒</span></div></center> <script type="text/javascript">  function getRTime() {        var EndTime = new Date('2023/06/7 00:09:00');       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);      var day = document.getElementById("t_d");     if (day != null) {         day.innerHTML = d + " 天";        }     var hour = document.getElementById("t_h");     if (hour != null) {         hour.innerHTML = h + " 时";       }     var min = document.getElementById("t_m");     if (min != null) {         min.innerHTML = m + " 分";        }     var sec = document.getElementById("t_s");     if (sec != null) {         sec.innerHTML = s + " 秒";     } }      setInterval(getRTime, 1000);      </script> </div></img>

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