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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              <main>
  <div id="pulse_text" class="text">click to play</div>
  <div id="pulse" class="box">pulse</div>
  
  <div id="bounce_text" class="text">click to play</div>
  <div id="bounce" class="box">bounce</div>
</main>
            
          
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              @import url('https://fonts.googleapis.com/css?family=Luckiest+Guy');

html {
  box-sizing: border-box;
  font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Oxygen-Sans,Ubuntu,Cantarell,"Helvetica Neue",sans-serif;
}
*, *:before, *:after {
  box-sizing: inherit;
}
html,
body {
  margin: 0;
  padding: 0;
}

main {
  align-items: center;
  background-color: #1d1e22;
  display: flex;
  flex-direction: column;
  height: 100vh;
  width: 100vw;
}

.text {
  color: #E0E0E0;
  font-size: 16px;
  margin: 30px 0 10px;
  padding: 5px 40px;
}

#pulse {
  animation-iteration-count: 3;
}

.box {
  align-items: center;
  background-color: #fff;
  border: 4px solid rebeccapurple;
  color: rebeccapurple;
  cursor: pointer;
  display: flex;
  font-family: 'Luckiest Guy';
  font-size: 40px;
  height: 60px;
  justify-content: center;
  width: 400px;
  will-change: transform;
}
            
          
!
            
              // our elements
var pulseText = document.querySelector('#pulse_text');
var pulse = document.querySelector('#pulse');
var bounceText = document.querySelector('#bounce_text');
var bounce = document.querySelector('#bounce');

// function for playing our pulse animation
function playPulse () {
	// prevent extra clicks during animation
  pulse.removeEventListener('click', playPulse);
  // add the library's classes
  pulse.classList.add('animated', 'pulse');
  // hide the play text since we can't click during animation
  pulseText.style.opacity = 0;
}
// event listener calls a function so we can prevent extra clicks
pulse.addEventListener('click', playPulse);
// function to reset after animation ends
pulse.addEventListener('animationend', function () {
	// restore event listener
	pulse.addEventListener('click', playPulse);
  // remove library's classes so they can be placed again
  pulse.classList.remove('animated', 'pulse');
  // restore the text since we can now click again
  pulseText.style.opacity = 1;
});

// function to play our infinite bounce animation
bounce.addEventListener('click', function () {
	// check to see if library classes have been applied
	if (!bounce.classList.contains('animated')) {
  	// animation is not playing, we will start it
    // change text to explain how to stop animation
  	bounceText.innerText = 'click to stop';
    // add the library's classes
  	bounce.classList.add('animated', 'bounce', 'infinite');
  } else {
  	// animation is playing, we will stop it
    // change text to explain how to start animation
  	bounceText.innerText = 'click to play';
    // remove the library's classes
  	bounce.classList.remove('animated', 'bounce', 'infinite');
  }
});
            
          
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