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HTML

CSS

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JavaScript

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HTML

              
                <div class="content">
  <h1>Sticky Footer with Flexbox</h1>
  <p><button id="add">Add Content</button></p>
</div>

<footer class="footer">
  Footer 
</footer>
              
            
!

CSS

              
                html, body {
  /* IE 10-11 didn't like using min-height */
  height: 100%;
}
body {
  display: flex;
  flex-direction: column;
}
.content {
  flex: 1 0 auto; /* Prevent Chrome, Opera, and Safari from letting these items shrink to smaller than their content's default minimum size. */
  padding: 20px;
}
.footer {
  flex-shrink: 0; /* Prevent Chrome, Opera, and Safari from letting these items shrink to smaller than their content's default minimum size. */
  padding: 20px;
}










* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font: 16px Sans-Serif;
}
h1 {
  margin: 0 0 20px 0;
}
p {
  margin: 0 0 20px 0;
}
footer {
  background: #42A5F5;
  color: white;
}
              
            
!

JS

              
                // Not required!
// This is just to demo functionality.

$("#add").on("click", function() {
  $("<p>Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Vestibulum tortor quam, feugiat vitae, ultricies eget, tempor sit amet, ante. Donec eu libero sit amet quam egestas semper. Aenean ultricies mi vitae est. Mauris placerat eleifend leo.</p>").appendTo(".content");
});
              
            
!
999px

Console