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HTML

              
                <h1>Box Sizing Demo: Change the Padding with this Range Input 

<i class="fa fa-heart"></i></h1> 
<div class="container">
<div class="row">
<div class="col-md-4 col-md-offset-4">

  

  <input type="range" value="0" min="0" max="100">
  
<div class="border-box">
  
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Morbi lacinia, lacus nec laoreet interdum, dui sem aliquet leo, a egestas ipsum massa vitae augue. Vestibulum et interdum augue. Phasellus et nisi metus. Donec accumsan quis velit at varius. Suspendisse tincidunt eu orci eget tincidunt. In consectetur tincidunt lectus. Vestibulum mollis, dui a congue pharetra, ligula mauris venenatis nibh, non tincidunt turpis nisl in mi. Nam placerat erat non justo viverra dictum. Donec arcu arcu, interdum et dictum ac, egestas et nibh. Cras tempor, quam sit amet euismod aliquam, erat ex pretium erat, pellentesque dapibus arcu nulla eu tellus. Sed non sapien ultricies, bibendum ipsum vitae, aliquam metus. Morbi interdum ullamcorper turpis at volutpat. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Suspendisse tincidunt dictum nisl ut vehicula.</p>
  
</div>
  
  </div>
  </div>
</div>
              
            
!

CSS

              
                .border-box {
  background: #fff;
}
h1 {
  text-align: center;
  margin-bottom: 20px;
}
h1 i {
  color: pink;
}
body {
  background: #e3e3e3;
  padding: 40px 0;
}
input {
  margin-bottom: 10px;
}
              
            
!

JS

              
                $(function() {
  
  $('input[type=range]').on('change mousemove', function() {
      $('.border-box').css('padding', $(this).val() + 'px');
  });
  
});
              
            
!
999px

Console