效果如图：
实现代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Clock</title>
<style>
body {
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
width: 100vw;
height: 100vh;
background: #2e1f27;
}
p{
color: #854d27;
}
code{
color: #f4c950;
}
.clock {
--clock-width: 50vmin;
width: var(--clock-width);
height: var(--clock-width);
position: relative;
overflow: hidden;
border: 6px solid #f4c950;
border-radius: 50%;
}
.clock:after {
content: '';
position: absolute;
z-index: 10;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
width: 6px;
height: 6px;
background: #d0b8ac;
border-radius: 50%;
}
.scaleContainer {
--scale-width: 2px;
margin: 0;
padding: 0;
width: var(--scale-width);
height: calc(var(--clock-width) / 2 + 4px);
position: absolute;
bottom: calc(var(--clock-width) / 2);
left: calc((var(--clock-width) - var(--scale-width)) / 2);
/*background: #f4c950;*/
transform-origin: center bottom;
}
.scaleContainer:nth-of-type(5n + 5) {
--scale-width: 5px;
width: var(--scale-width);
left: calc((var(--clock-width) - var(--scale-width)) / 2);
}
.scale{
height: calc(var(--clock-width) / 22);
background: #f4c950;
}
.scaleContainer:nth-of-type(5n + 5) .scale{
height: calc(var(--clock-width) / 16);
}
.hand {
--hand-width: 4px;
--hand-length: calc(var(--clock-width) / 2 - 6px);
width: var(--hand-width);
height: var(--hand-length);
background: #d0b8ac;
position: absolute;
bottom: calc(var(--clock-width) / 2);
left: calc((var(--clock-width) - var(--hand-width)) / 2);
transform-origin: center bottom;
z-index: 20;
}
.hour-hand{
height: 15vmin;
}
.minute-hand {
--hand-height: 20vmin;
height: var(--hand-height);
}
.second-hand {
--hand-width: 2px;
width: var(--hand-width);
left: calc((var(--clock-width) - var(--hand-width)) / 2);
}
</style>
</head>
<body>
<div class="clock">
<div class="hand hour-hand"></div>
<div class="hand minute-hand"></div>
<div class="hand second-hand"></div>
</div>
<p>Responsive dimension via CSS <code>cal</code> and <code>var</code>.</p>
<script>
const $clock = document.querySelector('.clock');
for (let i = 1; i <= 60; i++) {
const $scaleContainer = document.createElement('p');
$scaleContainer.classList.add('scaleContainer');
$scaleContainer.style.transform = `rotate(${6 * i}deg)`;
const $scale = document.createElement('div');
$scale.classList.add('scale');
// $scale.textContent = `${i}`;
$scaleContainer.appendChild($scale);
$clock.appendChild($scaleContainer);
}
const $hourHand = document.querySelector('.hour-hand');
const $minuteHand = document.querySelector('.minute-hand');
const $secondHand = document.querySelector('.second-hand');
function tick() {
const date = new Date();
const CS = date.getSeconds();
const Sdeg = CS / 60 * 360;
const CM = date.getMinutes();
const Mdeg = CM / 60 * 360 + 360 / 60 / 60 * CS;
const Hdeg = date.getHours() / 12 * 360 + 360 / 12 / 60 * CM + 360 / 12 / 60 / 60 * CS;
$hourHand.style.transform = `rotate(${Hdeg}deg)`;
$minuteHand.style.transform = `rotate(${Mdeg}deg)`;
$secondHand.style.transform = `rotate(${Sdeg}deg)`;
}
tick();
setInterval(tick, 1000);
</script>
</body>
</html>