Commit b154ff9

<html lang="en">

<meta charset="UTF-8">

<title>JS + CSS Clock</title>

<div class="clock">

<div class="clock-face">

<div class="hand hour-hand"></div>

<div class="hand min-hand"></div>

<div class="hand second-hand"></div>

</div>

</div>

<style>

html {

background:#018DED url(http://unsplash.it/1500/1000?image=881&blur=50);

background-size:cover;

font-family:'helvetica neue';

text-align: center;

font-size: 10px;

}

body {

font-size: 2rem;

display:flex;

flex:1;

min-height: 100vh;

align-items: center;

}

.clock {

width: 30rem;

height: 30rem;

border:20px solid white;

border-radius:50%;

margin:50px auto;

position: relative;

padding:2rem;

box-shadow:

0 0 0 4px rgba(0,0,0,0.1),

inset 0 0 0 3px #EFEFEF,

inset 0 0 10px black,

0 0 10px rgba(0,0,0,0.2);

}

.clock-face {

position: relative;

width: 100%;

height: 100%;

transform: translateY(-3px); /* account for the height of the clock hands */

}

.hand {

width:50%;

height:6px;

background:black;

position: absolute;

transform-origin: right;

top:50%;

}

</style>

<script>

const hourEl = document.querySelector(".hour-hand");

const minEl = document.querySelector(".min-hand");

const secondEl = document.querySelector(".second-hand");

function setDate() {

let now = new Date();

let h = now.getHours();

let m = now.getMinutes();

let s = now.getSeconds();

secondEl.style.transform = `rotate(${s*6 + 90}deg)`;

minEl.style.transform = `rotate(${m*6 + s/10+90}deg)`;

hourEl.style.transform = `rotate(${h*30 + s/120+90}deg)`;

}

setInterval(setDate , 1000);

// let now = new Date();

// let h = now.getHours();

// let m = now.getMinutes();

// let s = now.getSeconds();

// setInterval(()=>{

// s++;//秒数+1

// secondEl.style.transform = `rotate(${s*6 + 90}deg)`;

// minEl.style.transform = `rotate(${m*6 + s/10+90}deg)`;

// hourEl.style.transform = `rotate(${h*30 + s/120+90}deg)`;

// if(s == 60){

// s = 0;

// m++;

// if(m == 60){

// m = 0;

// h=(h+1)%12;

// }

// }

// },1000)

</script>