<!-- our template -->
<section id="app" class="hero is-info is-fullheight is-bold">
<div class="hero-body">
<div class="container has-text-centered">
  
  <h2 class="title is-6">Let the countdown begin!!</h2>
  
    <!--  THE TIMER NUMBERS  -->
  <div id="timer">
    <span id="minutes">25</span>
    <span id="middle">:</span>
    <span id="seconds">00</span>
  </div>

  <!--  THE BUTTONS  -->
  <div id="buttons">
    
    <!--  START BUTTON    -->
    <button 
      id="start" 
      class="button is-dark is-large"> 
        <i class="far fa-play-circle"></i>
    </button>
    
    <!--   PAUSE BUTTON   -->
    <button 
      id="stop" 
      class="button is-dark is-large"> 
        <i class="far fa-pause-circle"></i>
    </button>
    
    <!--  RESET BUTTON   -->
    <button 
      id="reset" 
      class="button is-dark is-large"> 
        <i class="fas fa-undo"></i>
    </button>
  </div>
  
</div>
</div>
</section>
#message {
  color: #DDD;
  font-size: 50px;
  margin-bottom: 20px;
}

#timer {
  font-size: 200px;
  line-height: 1;
  margin-bottom: 40px;
}
// Use whichever tool or technology to get the timer working!

External CSS

  1. https://cdnjs.cloudflare.com/ajax/libs/bulma/0.6.1/css/bulma.min.css
  2. https://use.fontawesome.com/releases/v5.0.6/css/all.css

External JavaScript

This Pen doesn't use any external JavaScript resources.