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HTML

              
                div.margin
  div.simon
    div.inside
      div.control
        div.onlight 
        h1.simontext.title Simon 
        text.r ®
        div.con
         div.countbox
           p.count --
         div.startbutton
           button.start
         div.strictbutton
           button.strict
           div.light
        div.textrow
          p.counttxt Count
          p.starttxt Start
          p.stricttxt Strict
          div.onoffswitch
            input(type="checkbox")(name="onoffswitch").onoffswitch-checkbox#myonoffswitch
            label.onoffswitch-label(for="myonoffswitch")
              span.onoffswitch-inner
              span.onoffswitch-switch  
      div.left.topleft.color#1
        audio#audio1(src="https://s3.amazonaws.com/freecodecamp/simonSound1.mp3")
      div.right.topright.color#2
        audio#audio2(src="https://s3.amazonaws.com/freecodecamp/simonSound2.mp3")
      div.left.bottomleft.color#3
        audio#audio3(src="https://s3.amazonaws.com/freecodecamp/simonSound3.mp3")
      div.right.bottomright.color#4
        audio#audio4(src="https://s3.amazonaws.com/freecodecamp/simonSound4.mp3")
      audio#audio5(src="https://www.freesound.org/people/Autistic%20Lucario/sounds/142608/download/142608__autistic-lucario__error.wav")
              
            
!

CSS

              
                body {
  background-image: url('https://unsplash.com/photos/h0Vxgz5tyXA/download');
 background-size: cover;
 -webkit-background-size: cover;
 -moz-background-size: cover;     -o-background-size: cover;
  background-repeat: no-repeat;
}
.margin{
  margin-top:100px;
}
.simontext {
  text-align:center;
}
.onlight {
  height:12px;
  width:12px;
  background-color: #014d00;
  border:solid 1px #013300;
  border-radius:50%;
  position:relative;
  z-index:-1;
  margin-left:auto;
  margin-right:auto;
  margin-top:14px;
}
.r{
  font-size:15px;
  float:right;
  margin-right:20px;
  margin-top:-63px;
  color:black;
}
.title {
  color:black;
  font-weight:900;
  margin-top:3px;
  font-family: 'Titillium Web', sans-serif;
  font-size:58px;
  margin-right:10px;
}
.simon {
  border-radius:50%;
  height:450px;
  width:450px;
  margin-left: auto;
  margin-right:auto;
  background-color:#262626;
  -webkit-box-shadow: 0px 0px 3px 3px rgba(0,0,0,0.5);
-moz-box-shadow: 0px 0px 3px 3px rgba(0,0,0,0.5);
  box-shadow: 0px 0px 3px 3px rgba(0,0,0,0.5);
}
.inside {
  border-radius:50%;
  height:400px;
  width:400px;
  margin: 0 auto;
}
.control {
  border:solid 8px #262626;
  height:230px;
  width:230px;
  margin-left:85px;
  margin-top:110px;
  border-radius:50%;
  background-color:#C0C0C0;
  position:absolute;
  z-index:10;
}
.left,
.right {
  background-color:green;
  width:50%;
  height:50%;
  margin:0px;
}
.left {
  float:left;
}
.right {
  float:right;
}
.topleft {
  border-right:solid 10px #262626;
  margin-top:25px;
  border-top-left-radius:100%;
  background-color: #00A74A;
  border-bottom:solid 10px #262626;
}
.topright {
  border-left:solid 10px #262626;
  border-top-right-radius:100%;
  margin-top:25px;
  background-color:#9F0F17;
  border-bottom:solid 10px #262626;
}
.bottomleft {
  border-right:solid 10px #262626;
  border-top:solid 10px #262626;
  border-bottom-left-radius:100%;
  background-color: #CCA707
}
.bottomright {
  border-left:solid 10px #262626;
  border-top:solid 10px #262626;
  border-bottom-right-radius:100%;
  background-color: #094A8F
}
h1 {
   -moz-user-select: none;
   -khtml-user-select: none;
   -webkit-user-select: none;
   -ms-user-select: none;
   user-select: none;
}
.countbox {
  width:60px;
  height:40px;
  border-radius:20%;
  border:solid 1px black;
  margin-left:20px;
  background-color:#494F35;
  -webkit-box-shadow: inset 0px 0px  3px 5px rgba(0,0,0,0.75);
  -moz-box-shadow: inset 0px 0px 3px 5px rgba(0,0,0,0.75);
  box-shadow: inset 0px 0px 3px 3px rgba(0,0,0,0.75);
  float:left;
}
button:active {
  background-color: #3e8e41;
  box-shadow: 0 1px #666;
  transform: translateY(2px);
}
.count {
  user-select:none;
  -webkit-user-select:none; 
  -moz-user-select:none;
  -ms-user-select: none;
  color:#323725;
  text-align:center;
  font-family:Orbitron;
  font-size:25px;
}
.con {
  margin-top:10px;
}
button.start {
  margin-left: 20px;
  margin-top:7px;
  height:25px;
  width:25px;
  background-color: #FE0002;
  border-radius:50%;
  border:solid 1px black;
}
button.strict{  
  height:25px;
  width:25px;
  background-color: #F2F021;
  border-radius:50%;
  margin-top:-25px;
  margin-right:38px;
  border:solid 1px black;
  float:right;
}
.light{
  height:8px;
  width:8px;
  border:solid 1px #31080F;
  background-color: #31080F;
  border-radius:50%;
  float:right;
  margin-right:46px;
  margin-top:-38px;
}
button {
    -webkit-box-shadow: 0px 2px 0px 1px rgba(0,0,0,0.75);
  -moz-box-shadow: 0px 2px 0px 1px rgba(0,0,0,0.75);
  box-shadow: 0px 2px 0px 1px rgba(0,0,0,0.75);
}
.counttxt {
  float:left;
  position:absolute;
  margin-left:34px;
}
.starttxt {
  margin-left:98px;
}
.stricttxt {
  float:right;
  position:relative;
  margin-top:-35px;
  margin-right:36px;
}
.textrow {
  user-select:none;
  -webkit-user-select:none; 
  -moz-user-select:none;
  -ms-user-select: none;
  font-family: 'Yanone Kaffeesatz', sans-serif;
  margin-top:5px;
  font-size:18px;
  color:black;
}
// On Off 
.onoffswitch {
      margin-left:auto;
      margin-right:auto;
      position: relative; 
      width: 60px;
      -webkit-user-select:none; 
      -moz-user-select:none;
      -ms-user-select: none;
}
.onoffswitch-checkbox {
        display: none;
}
.onoffswitch-label {
        display: block; 
        overflow: hidden; 
        cursor: pointer;
        border: 2px solid #262626;
        border-radius: 5px;
    }
.onoffswitch-inner {
        display: block; 
        width: 200%;
        margin-left: -100%;
        transition: margin 0.3s ease-in 0s;
    }
.onoffswitch-inner:before, .onoffswitch-inner:after {
        display: block;
        float: left; 
        width: 50%; 
        height: 20px; 
        padding: 0; 
        line-height: 20px;
        font-size: 10px; 
        color: white; 
        font-family: Trebuchet, Arial, sans-serif; 
        font-weight: bold;
        box-sizing: border-box;
    }
.onoffswitch-inner:before {
        content: "On";
        padding-left: 5px;
        background-color: #00709D;  
        color: #FFFFFF;
    }
.onoffswitch-inner:after {
        content: "Off";
        padding-right: 5px;
        background-color:#595959;
        color: white;
        text-align: right;
    }
.onoffswitch-switch {
        display: block; 
        width: 24px;
        margin: 0px;
        background: #999999;
        position: absolute; top: 0; bottom: 0;
        right: 36px;
        border: 2px solid #262626; border-radius: 5px;
        transition: all 0.3s ease-in 0s; 
    }
.onoffswitch-checkbox:checked + .onoffswitch-label .onoffswitch-inner {
        margin-left: 0;
    }
    .onoffswitch-checkbox:checked + .onoffswitch-label .onoffswitch-switch {
        right: 0px; 
    }
@keyframes animTopLeft {
  0% {background-color: #00A74A}
  50% {background-color: #00ff71}
  100% {background-color: #00A74A}
}
@keyframes animTopRight {
  0% {background-color: #9F0F17}
  50% {background-color: #eb2e38}
  100% {background-color: #9F0F17}
}
@keyframes animBottomLeft {
   0% {background-color: #CCA707}
  50% {background-color: #F3F34E}
  100% {background-color: #CCA707}
}
@keyframes animBottomRight {
  0% {background-color: #094A8F}
  50% {background-color: #0f7cf0}
  100% {background-color: #094A8F}
}
.topleftanim {
    animation-name: animTopLeft;
    animation-duration: 1000ms;
  
}
.toprightanim{
    animation-name: animTopRight;
    animation-duration: 1000ms;
}
.bottomleftanim{
  animation-name: animBottomLeft;
  animation-duration: 1000ms;   
}
.bottomrightanim {
      animation-name: animBottomRight;
    animation-duration: 1000ms;
}
              
            
!

JS

              
                var switchstate = 0;
var strictstate = 0;
var commandarr = [];
var restart = 0;
var userArr = [];
var num = 0;
var command;
var val;
disabled();
function disabled() {
  $(".topleft").css("pointer-events","none");
  $(".topright").css("pointer-events","none");
$(".bottomright").css("pointer-events","none");
$(".bottomleft").css("pointer-events","none");
}
function enabled() {
   $(".topleft").css("pointer-events","auto");
  $(".topright").css("pointer-events","auto");
$(".bottomright").css("pointer-events","auto");
$(".bottomleft").css("pointer-events","auto");
}
$("#myonoffswitch").click(function() {
  countChange();
});

function countChange() {
  if (switchstate === 0) {
    $(".count").css("color", "black");
    $(".onlight").css("background-color", "#01DF00");
    switchstate = 1;
    restart = 0;
  } else if (switchstate == 1) {
    $(".count").css("color", "#323725");
    $(".onlight").css("background-color", "#014d00");
    $(".light").css("background-color", "#31080F");
    strictstate = 0;
    restartSimon();
    commandarr = [];
    switchstate = 0;
  }
}

function restartSimon() {
  disabled();
  $(".count").text("--");
  commandarr = [];
  userArr = [];
  command = 0;
  restart = 0;
  $(".topleft").removeClass(".toprightanim");
  $(".bottomleft").removeClass(".bottomleftanim");
  $(".topright").removeClass(".toprightanim");
  $(".bottomright").removeClass(".bottomrightanim");
}

function random(min, max) {
  return Math.floor(Math.random() * (max - min)) + min;
}
$(".strict").click(function() {
  if (strictstate === 0 && switchstate == 1) {
    $(".light").css("background-color", "#c4223e");
    strictstate = 1;
  } else if (strictstate == 1 && switchstate == 1) {
    $(".light").css("background-color", "#31080F");
    strictstate = 0;
  }
});
$(".start").click(function() {
  if (restart == 1 && switchstate == 1) {
    restartSimon();
    
  } else if (switchstate == 1 && restart === 0) {
    restart = 1;
    simon();
  }
});

function simon() {
  disabled();
  var rand = random(1, 5);
  if(rand!==commandarr[commandarr.length-1]) {
  commandarr.push(rand);
  }
else if(rand==commandarr[commandarr.length-1]) {
  if(rand<3) {
    commandarr.push(rand+1);
  }
 else if(rand>=3){
   commandarr.push(rand-1);
 } 
} 
 if ($(".count").text() == "20") {
    alert("You win!");
    restartSimon();
    return;
  }
  userArr=[];
  if (commandarr.length <= 20) {
    $(".count").text(commandarr.length.toString());
    animArr();
    num = 0;
    userInput(num);
  }
}

function exclam() {
  disabled();
  audio5.play();
  if(strictstate==0) {
  $("button").prop('disabled', true);
  
  animTopLeft();
  animTopRight();
  animBottomLeft();
  animBottomRight();
  $(".count").fadeOut("150");
  $(".count").fadeIn("150");
  $("button").prop('disabled', false);
} else if (strictstate==1) {
    $("button").prop('disabled', true);
  
  animTopLeft();
  animTopRight();
  animBottomLeft();
  animBottomRight();
  $(".count").fadeOut("150");
  $(".count").fadeIn("150");
  $("button").prop('disabled', false);
  setTimeout(function() {
     restartSimon();
  },800)
  repeat();
}
}
function repeat() {
     setTimeout(function() {
      simon();
    }, 800);
}

$(".topleft").click(function() {
  animTopLeft();
  if(Number($('#1').attr('id')) ==commandarr[val]) {
    if (val == commandarr.length-1) {
      repeat();
    } else {
   val++ ;
    }
  } else if (Number($('#1').attr('id')) !==commandarr[val]) {
    exclam();
    disabled();
    setTimeout(function() {
          animArr();
    },1000);
  }
});

$(".topright").click(function() {
  animTopRight();
    if(Number($('#2').attr('id')) ==commandarr[val]) {
    if(val == commandarr.length-1) {
      repeat();
    } else {
   val++ ;
    }
  } else if (Number($('#2').attr('id')) !==commandarr[val]){
    exclam();
    disabled();
    setTimeout(function() {
          animArr();
    },1000);
  }
});

$(".bottomleft").click(function() {
  animBottomLeft();
  if(Number($('#4').attr('id')) ==commandarr[val]) {
   if (val == commandarr.length-1) {
      repeat();
    } else {
   val++ ;
    }
  } else if (Number($('#4').attr('id')) !==commandarr[val]) {
    exclam();
    setTimeout(function() {
          animArr();
    },1000);
  }
});

$(".bottomright").click(function() {
  animBottomRight();
    if(Number($('#3').attr('id')) ==commandarr[val]) {
    if(val == commandarr.length-1) {
      repeat();
    } else {
   val++ ;
    }
  } else if (Number($('#3').attr('id')) !==commandarr[val]){
    exclam();
    disabled();
    setTimeout(function() {
          animArr();
    },1000);
  }
});

function animTopLeft() { $(".topleft").addClass("topleftanim"); 
  audio1.play();
  setTimeout(function() {
    $(".topleft").removeClass("topleftanim");
  },1000);
}

function animTopRight() {
 
$(".topright").addClass("toprightanim");
  audio2.play();
  setTimeout(function() {
    $(".topright").removeClass("toprightanim");
    
  },1000);
}

function animBottomLeft() {
  
 audio4.play(); $(".bottomleft").addClass("bottomleftanim");
                          
  setTimeout(function() {
   $(".bottomleft").removeClass("bottomleftanim");
  }, 1000);
}

function animBottomRight() {
audio3.play();
  $(".bottomright").addClass("bottomrightanim");            
  setTimeout(function() {
   $(".bottomright").removeClass("bottomrightanim");
  }, 1000);
}

function animArr2(val) {
  command = commandarr[val];
  if (command == 1) {
    animTopLeft();
  }
  if (command == 2) {
    animTopRight();
  }
  if (command == 3) {
    animBottomRight();
  }
  if (command == 4) {
    animBottomLeft();
  }
}

function animArr() {
  var int2 = setInterval(function() {
    enabled();
  }, (commandarr.length*1000));
  val =0;
  disabled();
  var i = 0;
	var int = setInterval(function() {
		animArr2(i);
        i++;
        if (i >= commandarr.length) {
         
			clearInterval(int);
        
        }
   }, 900);
}
var audio1 = document.getElementById("audio1");
var audio2 = document.getElementById("audio2");
var audio3 = document.getElementById("audio3");
var audio4 = document.getElementById("audio4")
var audio5 = document.getElementById("audio5")
              
            
!
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