index.html

<!DOCTYPE html>
<html lang="en" dir="ltr">
  <head>
    <meta charset="utf-8">
    <title></title>
    <link rel="stylesheet" href="style.css">
   
    <script src="javascript.js"></script>
  </head>
<body>
    <div class="middle">
    <div?id="time"></div><br>
<div?id="clock">
??<div?class="num?num1"><div>1</div></div>
??<div?class="num?num2"><div>2</div></div>
??<div?class="num?num3"><div>3</div></div>
??<div?class="num?num4"><div>4</div></div>
??<div?class="num?num5"><div>5</div></div>
??<div?class="num?num6"><div>6</div></div>
??<div?class="num?num7"><div>7</div></div>
??<div?class="num?num8"><div>8</div></div>
??<div?class="num?num9"><div>9</div></div>
??<div?class="num?num10"><div>10</div></div>
??<div?class="num?num11"><div>11</div></div>
??<div?class="num?num12"><div>12</div></div>
??<div?id="hr-hand"></div>
??<div?id="min-hand"></div>
??<div?id="sec-hand"></div>
</div>
  </body>
</html>

style.css

:root{
  --size: 200px;
}

#clock{
  width: var(--size);
  height: var(--size);
  background-color: #ccc;
  border: 3px solid #000;
  border-radius: 50%;
  box-shadow: 0 0 10px 0 black;
  position: relative;
}

#sec-hand {
  width: 1px;
  height: 50%;
  background-color: black;
  transform-origin: 50% 80%;
  position: absolute;
  top: 10%;
  left: 50%;
}

#min-hand {
  width: 3px;
  height: 40%;
  background-color: blue;
  transform-origin: 50% 80%;
  position: absolute;
  top: 18%;
  left: calc(50% - 1px);
}

#hr-hand {
  width: 5px;
  height: 25%;
  background-color: red;
  transform-origin: 50% 80%;
  position: absolute;
  top: 30%;
  left: calc(50% + -2px);
}

.num{
  height: 100%;
  position: absolute;
  left: calc(50% - 0.5em);
}

.num div {
  width: 1em;
  line-height: 2em;
  color: brown;
  text-align: center;
  vertical-align: middle;
}

.num1 {
  transform: rotate(30deg);
}

.num1 div{
  transform: rotate(-30deg);
}

.num2 {
  transform: rotate(60deg);
}

.num2 div{
  transform: rotate(-60deg);
}

.num3 {
  transform: rotate(90deg);
}

.num3 div{
  transform: rotate(-90deg);
}

.num4 {
  transform: rotate(120deg);
}

.num4 div{
  transform: rotate(-120deg);
}

.num5 {
  transform: rotate(150deg);
}

.num5 div{
  transform: rotate(-150deg);
}

.num6 {
  transform: rotate(180deg);
}

.num6 div{
  transform: rotate(-180deg);
}

.num7 {
  transform: rotate(210deg);
}

.num7 div{
  transform: rotate(-210deg);
}

.num8 {
  transform: rotate(240deg);
}

.num8 div{
  transform: rotate(-240deg);
}

.num9 {
  transform: rotate(270deg);
}

.num9 div{
  transform: rotate(-270deg);
}

.num10 {
  transform: rotate(300deg);
}

.num10 div{
  transform: rotate(-300deg);
}

.num11 {
  transform: rotate(330deg);
}

.num11 div{
  transform: rotate(-330deg);
}

.num12 {
  transform: rotate(0deg);
}

.num12 div{
  transform: rotate(-0deg);
}

javascript.js

setInterval(function(){
  var date = new Date();
  updateTime(date);
  updateClock(date);
}, 1000);

function updateClock(date){
  var secHand = document.getElementById("sec-hand").style;
  var minHand = document.getElementById("min-hand").style;
  var hrHand = document.getElementById("hr-hand").style;
  
  secHand.transform = "rotate(" + date.getSeconds() * 6 + "deg)";
  minHand.transform = "rotate(" + date.getMinutes() * 6 + "deg)";
  hrHand.transform = "rotate(" + (date.getHours() * 30 + date.getMinutes() * 0.5) + "deg)";
}

function updateTime(date){
  var timeDiv = document.getElementById("time");
  var time = "Time for Reference --- " + date.getHours() + " : " + date.getMinutes() + " : " + date.getSeconds();
  timeDiv.innerHTML = time;
}

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