<h1 class="off">C<span>LOCK</span></h1>
<div id="clock">
  <ul id="s">
  </ul>
  <ul id="m">
  </ul>
  <ul id="h">
  </ul>
</div>
*,*::after,*::before {
  box-sizing:border-box;
}

body {
  margin: 0;
  width: 100vw;
  height: 100vh;
  background: radial-gradient(circle at 50% 50%, #eeeeee 0%, #333 100%);
  font-family: 'PT Mono';
}

h1 {
  margin: 0;
  font-family: 'Montserrat';
  position:absolute;top:50%;left:50%;
  height:200px;width:200px;;text-align:center;line-height:200px;font-size:200px;
  font-weight: 400;
  color: rgba(230,230,230,1);
  text-shadow: 0 0px 50px rgba(255,255,255,.75), 0 0px 150px rgba(255,255,255,0.5), 0 0px 200px rgba(255,255,255,0);
  transform: translate(-55%, -50%);
  transform-origin: 50%;
  cursor: pointer;
  z-index: 100;
  transition: all .25s;
}

h1.off {
  color: transparent;
   text-shadow: 0 1px 1px rgba(255,255,255,0.35), 0 -1px 1px rgba(0,0,0,0.15);
}

h1 span {
  font-size: 30px;
  display: block;
  position:absolute;
  top: 0;
  left: 120px;
}

#clock {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  z-index: 1
}

h1.off + #clock {
  background-image: linear-gradient(60deg, rgba(255,255,255,.05) 0%, rgba(255,255,255,0.7) 40%, rgba(255,255,255,0.5) 45%, rgba(255,255,255,.25) 55%, rgba(255,255,255,.35) 55.5%, rgba(255,255,255,0.3) 60%, rgba(255,255,255,0.2) 68%, rgba(255,255,255,0.1) 72%, rgba(255,255,255,0.25) 75%, rgba(255,255,255,0) 100%), radial-gradient(circle at 50% 10%, rgba(180,180,180,1) 0%, rgba(140,140,140,1) 80%);
  box-shadow: inset 0 10px 10px 0px rgba(0,0,0,0.35), inset 0 -3px 1px rgba(222,220,210,1), 0 1px 0 1px rgba(255,255,255,0.5), 0 0 0px 10px rgba(222,98,0,.3), 0 0 0 11px rgba(255,255,255,0.5), 0 30px 50px 20px rgba(0,0,0,0.5);
}

#clock::after{
  content: '';
  position: absolute;
  border: 1px solid #000;
  width: 100px;
  height:30px;
  transition-origin: 50%;
  top: 50%;
  left: 50%;
  box-shadow: inset 0 0 20px 0px rgba(255,255,255,1), 0 0 100px 1000px rgba(0,0,0,0.75);
  transition: all .5s;
  transform: translate(120px, -50%)
}

#clock::before {
  content: '';
  position:absolute;
  border: 1px dashed #000;
  border-top:0;
  border-bottom: 0;
  width:30px;height:10px;
  right:0;
  top:50%;
  margin: -5px 44px 0 0;
  animation: pulse 1s infinite;
}

h1.off + #clock::after {
  box-shadow: 0 0 100px 1000px rgba(0,0,0,0), 0 0px 1px rgba(0,0,0,0.25);
  background: linear-gradient(to bottom, rgba(255,255,255,0.65) 0%, rgba(255,255,255,0) 40%, rgba(255,255,255,0) 60%, rgba(255,255,255,.15) 100%);
  border: 1px solid rgba(0,0,0,0);
  border-bottom: 1px solid rgba(0,0,0,0.15);
  border-radius: 4px;
}

h1.off + #clock::before {
  border: 1px dashed rgba(80,80,80,1);
  border-top:0;border-bottom: 0;
  opacity: 1;
  animation: none;
}

ul {
  position: absolute;
  margin: 0;
  padding: 0;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  list-style: none;
  margin: -10px 0 0 -10px;
}

#s,#m,#h {
  transform: rotateZ(0deg);
  transition: all .5s cubic-bezier(0.5, -0.5, 0.500, 1.5);
}

li {
  position: absolute;
  transition: all .25s;
  width: 20px;
  height: 20px;
  line-height: 20px;
  text-align: right;
  opacity: 0.2;
  transform-origin: 50%;
  transition: all .25s linear .25s
}

li::after {
  
}

li.active {
  color: #424242;
  opacity: 1;
  font-weight: 700;
  font-size: 18px;
}

@keyframes pulse {
  0%,50%  {
    opacity: 1
  }
  51%,100% {
    opacity: 0
  }
}
function draw(){
  for(i=0;i<60;i++){
    D = (i<10) ? '0'+i : i;
    $('#s').append('<li data-item='+D+'>'+D+'</li>');
  }
  for(i=0;i<60;i++){
     D = (i<10) ? '0'+i : i;
    $('#m').append('<li data-item='+D+'>'+D+'</li>');
  }
  for(i=0;i<24;i++){
     D = (i<10) ? '0'+i : i;
    $('#h').append('<li data-item='+D+'>'+D+'</li>');
  }
}
function place(){
  hdeg = 15;
  msdeg = 6;
  $('#s li').each(function(index){
    $(this).css({transform: 'rotateZ('+msdeg * index +'deg) translateX('+ parseInt(200) +'px)'});
  });
  $('#m li').each(function(index){
    $(this).css({transform: 'rotateZ('+msdeg * index +'deg) translateX('+ parseInt(170) +'px)'});
  });
  $('#h li').each(function(index){
    $(this).css({transform: 'rotateZ('+hdeg * index +'deg) translateX('+ parseInt(140) +'px)'});
  });
}
//TIMER
function sec(ts,timer){
  TS = ts % 60;
  if(ts == 0 && timer) min(0,timer);
  deg = 360/60 * ts;
  $('#s li').removeClass('active');
  $('#s li').eq(TS).addClass('active');
  $('#s').css({transform: 'rotateZ(-'+deg+'deg)'});
  ts++;
  if(timer) setTimeout(function(){sec(ts,timer)},TIME * 1000);
}
function min(tm,timer){
  TM = tm % 60;
  if(tm == 0 && timer) hour(0,timer);
  deg = 360/60 * tm;
  $('#m li').removeClass('active');
  $('#m li').eq(TM).addClass('active');
  $('#m').css({transform: 'rotateZ(-'+deg+'deg)'});
  tm++;
  if(timer) setTimeout(function(){min(tm,timer)}, TIME * 60000);
}
function hour(th,timer){
  TH = th % 24;
  deg = 360/24 * th;
  $('#h li').removeClass('active');
  $('#h li').eq(TH).addClass('active');
  $('#h').css({transform: 'rotateZ(-'+deg+'deg)'});
  th++;
  if(timer) setTimeout(function(){hour(th,timer)}, TIME * 3600000);
}
//CLOCK
function clock(){
  d = new Date();
  H = d.getHours();
  M = d.getMinutes();
  S = d.getSeconds();
  hour(H,0);
  min(M,0);
  sec(S,0);
  setTimeout(function(){clock();},1000);
}

$(document).ready(function(){
  draw();
  place();
  //TIMER
  /*
  TIME = 1;
  sec(0,1);
  */
  //CLOCK
  clock();
  //LIGHT
  $("h1").click(function(){
    $(this).toggleClass('off');
  });
});

External CSS

  1. https://fonts.googleapis.com/css?family=Montserrat:400,700
  2. https://fonts.googleapis.com/css?family=PT+Mono

External JavaScript

  1. https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.2/jquery.min.js