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HTML

              
                <body>
  <div class="container-fluid text-center">
    <h1 class="text-center" id="header">
      <strong>Pomodoro Clock</strong>
    </h1>
    
    <div class="row" id="row"><div class="col-md-3 col-sm-2 col-xs-1"></div>
      <div class="col-md-3 col-sm-4 col-xs-5 block" id="left">
        <h2>BREAK LENGTH</h2>
        <div class="toggle">
          <button class="btn block minus">-</button>
          <p class="block"id="restTime">5</p>
          <button class="btn block plus">+</button>
        </div>
      </div>
      <div class="col-md-3 col-sm-4 col-xs-5 block" id="right">
        <h2>SESSION LENGTH</h2>
        <div class="toggle">
          <button class="btn block minus">-</button>
          <p class="block" id="sessTime">25</p>
          <button class="btn block plus">+</button>
        </div>
      </div>
    </div>
    <div class="circle text-center">
      <h3 id="countWindow">25:00</h3>
    </div>
    <h2 id="clockTag"><strong>IN SESSION</strong></h2>
    <div class="switch btn-group" role="group" aria-label="startStopReset">
      <button type="button" class="btn btn-success" id="start"><i class="fa fa-play" aria-hidden="true"></i></button>
      <button type="button" class="btn btn-danger" id="stop"><i class="fa fa-stop" aria-hidden="true"></i></button>
      <button type="button" class="btn btn-warning" id="reset"><i class="fa fa-repeat" aria-hidden="true"></i></button>
    </div>
    <audio controls id="myAudio">
  <source src="http://www.wavsource.com/snds_2017-05-21_1278357624936861/movies/star_wars/servant.wav" type="audio/wav">
</audio>
  </div>
</body>
              
            
!

CSS

              
                body{
  color: white;
  /* Location of the image */
  background-image: url(http://img10.deviantart.net/2174/i/2010/191/e/1/dark_weather_by_noe_me.jpg);
  
  /* Background image is centered vertically and horizontally at all times */
  background-position: center top;
  
  /* Background image doesn't tile */
  background-repeat: no-repeat;
  
  /* Background image is fixed in the viewport so that it doesn't move when 
     the content's height is greater than the image's height */
  background-attachment: fixed;
  
  /* This is what makes the background image rescale based
     on the container's size */
  background-size: cover;
  
  /* Set a background color that will be displayed
     while the background image is loading */
  background-color: #464646;
}

#header{
  margin-top: 5%;
}

h1{
  font-family: "Brush Script MT", cursive;
  font-size: 64px;
}

.block{
  display: inline-block;
  background-color: Transparent;
  color: white;
}

h2{
  font-family: helvetica;
  font-size: smaller;
  margin-top: 3%;
}

#clockTag{
  margin-top: 1%;
}

.circle{
  width:150px;
  height:150px;
  border-radius:75px;
  font-size:20px;
  color:#fff;
  line-height:100px;
  text-align:center;
  background:#5cb85c;
  margin: auto;
  display: table;
}

#countWindow {
  display: table-cell;
  vertical-align: middle;
}

#stop{
  display: none;
}

#start, #stop, #reset{
margin-top: 1%;
max-width: 60px;
min-width: 60px;
}

audio{
  display: none;
}
              
            
!

JS

              
                $(document).ready(function(){
  var state = "session";
  var restMins = 5;
  var restSeconds = 0;
  var sessionMins = 25;
  var sessionSeconds = 0;
  var vid = document.getElementById("myAudio");
  
  //function that ammends the session and break times
  function changeTimes(button, sessionBreak){
    if (button === '-' && sessionBreak === 'SESSION LENGTH' && sessionMins>1){
      sessionMins = sessionMins-1;
    }
    else if(button === '+' && sessionBreak === 'SESSION LENGTH'){
      sessionMins = sessionMins+1;
    }
    else if(button === '-' && sessionBreak === 'BREAK LENGTH' && restMins>1){
      restMins = restMins-1; 
    }
    else if(button === '+' && sessionBreak === 'BREAK LENGTH'){
      restMins = restMins+1;
    }
    return restMins, restSeconds, sessionMins, sessionSeconds;
  }
  
  //play audio function
  function playAud() { 
    vid.play(); 
} 
  
  //check whether the time has counted down to '0:00'. Change state if so.
  function switchTimes(mins, seconds){
    if (state === 'session' && mins === 0 && seconds === 0){
      state = 'rest';
      $('body').css('background-image', 'url(http://onehdwallpaper.com/wp-content/uploads/2015/07/Beautiful-Scenery-HD-Wallpapers-Pictures-8.jpg)');
      $('#clockTag').text('TAKE A BREAK');
      sessionMins = parseInt($('#sessTime').text());
      sessionSeconds = 0;
      playAud();
    }
    else if (state ==='rest' && mins === 0 && seconds === 0){
      state = 'session';
      $('body').css('background-image', 'url(http://img10.deviantart.net/2174/i/2010/191/e/1/dark_weather_by_noe_me.jpg)');
      $('#clockTag').text('IN SESSION');
      restMins = parseInt($('#restTime').text());
      restSeconds = 0;
      playAud();
    }
    return state, sessionMins, sessionSeconds, restMins, restSeconds;
  }
  
  //check the lenght and add '0' to seconds and mins if needed
  function checkNumLength(mins, seconds){
   switchTimes(mins, seconds);
    
    switch(seconds.toString().length){
     case 1:
          seconds = '0' + seconds
          $('#countWindow').text(mins + ':' + (seconds));
          console.log(mins + ':' + seconds);
          break;   
     
     case 2:
          $('#countWindow').text(mins + ':' + seconds);
          console.log(mins + ':' + seconds);
          break;
                                    }
    switch(mins.toString().length){
      case 1:
          $('#countWindow').text('0' + mins + ':' + seconds);
          break;  
      
      case 2:
          $('#countWindow').text(mins + ':' + seconds);
          break;
                                 }
    return mins, seconds;
  }
  
  //This function is called when the start button is clicked. It counts down to zero (in progress). Need to add switch function somewhere (to switch to from session to rest – and vice-versa – when the time reaches 0).
  function myTimeoutFunction(){
    
    //Check whether the countdown should be session clock or rest clock
    if (state === 'session' && sessionSeconds > 0){
     sessionSeconds = sessionSeconds-1;
     var seconds = sessionSeconds;
     var mins = sessionMins;
    }
    
    else if(state === 'session' && sessionSeconds === 0){
      sessionMins = sessionMins-1;
      sessionSeconds = 59;
      mins = sessionMins;
      seconds = sessionSeconds;
    }
    
    else if(state === 'rest' && restSeconds > 0){
      restSeconds = restSeconds-1;
      seconds = restSeconds;
      mins = restMins;
    }
    
    else if(state === 'rest' && restSeconds === 0){
      restMins = restMins-1;
      restSeconds = 59;
      mins = restMins;
      seconds = restSeconds;
    }
    
    checkNumLength(mins, seconds)
}

  //begin clock countdown
  function countDown(){
   
    //If stop is pressed, run this function to interrupt the countdown
    function stopTime(){
    window.clearInterval(timerId);
  }
    //reset the time when the reset button is pressed
    function resetTime(){
      state = 'session';
      sessionMins = parseInt($('#sessTime').text());
      sessionSeconds = 0;
      checkNumLength(sessionMins, sessionSeconds);
    }
    //This will initial the repeated function for countdown (every 1000ms)
    var timerId = window.setInterval(myTimeoutFunction, 1000);
    $('.switch').on('click', '#stop', function(){
    $('#stop').hide();
    $('#start').show();
    stopTime();
  });
    $('.switch').on('click', '#reset', function(){
    $('#stop').hide();
    $('#start').show();
    stopTime();
    resetTime();
    });
  }
  
  
  //Call 'time' function when the time toggle buttons are pressed
  $('.toggle').on('click', '.btn', function(){
    changeTimes($(this).html(), $(this).parent('div').prev('h2').text());
    $('#left').find('p').text(restMins);
    $('#right').find('p').text(sessionMins);
    if (state==='session'){
      checkNumLength(sessionMins, sessionSeconds);
   }
    else if (state==='rest'){
      checkNumLength(restMins, restSeconds);
    }
  });
  
  //Start button clicked to start countdown
  $('.switch').on('click', '#start', function(){
    $('#start').hide();
    $('#stop').show();
    countDown();
  });
});
              
            
!
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