What is the best way to conceal a sticky footer using another element?

I have a footer that remains fixed at the bottom of both long and short pages. Below is the CSS code for this footer:

.footer{
  position: absolute;
  bottom: 0;
  width: 100%;
  height: 100px;
  background-color: white;
}

My goal is to achieve a 'reveal' or curtain effect similar to what can be seen on dartlang.org when scrolling down to the bottom of the page. I attempted to create this effect with a fixed footer but encountered issues.

In my Rails application, I render the footer using the following code in my application.html.erb file:

<%= render 'shared/footer' unless @disable_footer %>

Unfortunately, the jQuery reveal footer does not seem to work properly with this setup either.

EDIT: Here is the code snippet for my footer. Please excuse its somewhat messy structure:

<footer class="footer" id="#myfooter">
  <body>
    <div style="background-color: white;">
      <hr style="width: 100%;">

      <div class="container">

        <div class="row">
          <div class="container-fluid">
            <div class="col-md-6">
              <h4>Consulting and Development</h4>
              <ul style="font-weight: bold;">


                <li><%= link_to "Training and Coaching", training_coaching_path%></li>
                <li> <%= link_to "Business Development", business_development_path%></li>
                <li> <%= link_to "Automotive Consulting", automotive_consulting_path%></li>
                <li> <%= link_to "Environmental Consulting", environmental_safety_path%></li>

              </ul>
            </div>

            <div class="col-md-6">
              <h4>Quality Product Assurance</h4>
              <ul style="font-weight: bold;">
                <li><%= link_to "Product Inspection and Quality Resolution", containment_and_quality_path%></li>
                <li><%= link_to "Auditing", auditing_path%></li>
              </ul>
            </div>

          </div>
        </div>

        <hr>

        <div class="row">
          <div class="col-md-4">
            <h4 style="text-decoration: underline;">Corporate Office Location:</h4>
            <p>1</p>
            <p></p>
          </div>

          <div class="col-md-4">
            <h4 style="text-decoration: underline;">Mailing Address:</h4>
            <p></p>
            <p></p>
          </div>

          <div class="col-md-4" style="text-align: center">
            <p>
             <a href="mailto:hr"><i class="fa fa-envelope-o fa-2x" aria-hidden="false"></i></a>
              <a href="https://www.linkedin.com/company/"><i class="fa fa-linkedin fa-2x" aria-hidden="false"></i></a>
              <a href="https://www.facebook.com/"><i class="fa fa-facebook-square fa-2x" aria-hidden="false"></i></a>
            </p>
          </div>

        </div>

        <div class="row">
          <div class="col-md-12">
            <p class="text-muted" style="text-align: center;"> - Copyright 2016 - All Rights Reserved</p>
            <p class="text-muted" style="text-align: center;"> Homepage background image was <a href="http://www.freepik.com/free-vector/gear-icons-collection_792514.htm">Designed by Freepik</a></p>
          </div>
        </div>

      </div>
    </div>
  </body>
</footer>

Answer №1

To create a footer with a fixed position, use the CSS property position: fixed and ensure it has a lower z-index than the main content. Make sure to set the margin-bottom value of the main content equal to the height of the footer for proper visibility.

    html,
    body {
      margin: 0;
      padding: 0;
    }
    .main-content {
      background-color: #333333;
      width: 100%;
      height: 800px;
      margin-bottom: 300px;
    }
    .footer {
      background-color: #0072C6;
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 300px;
      z-index: -1;
    }
    .footer p {
      color: #000000;
    }
<div class="main-content">
</div>
<div class="footer">
  <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras sagittis congue malesuada. Donec a eros ac risus facilisis pellentesque sit amet feugiat orci. Ut adipiscing, arcu sit amet facilisis condimentum, diam arcu tempus erat, at sagittis libero.</p>
  <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras sagittis congue malesuada. Donec a eros ac risus facilisis pellentesque sit amet feugiat orci. Ut adipiscing, arcu sit amet facilisis condimentum, diam arcu tempus erat, at sagittis libero.</p>
  <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras sagittis congue malesuada. Donec a eros ac risus facilisis pellentesque sit amet feugiat orci. Ut adipiscing, arcu sit amet facilisis condimentum, diam arcu tempus erat, at sagittis libero.</p>
</div>

Answer №2

To achieve the desired effect, you can set the position: relative and a z-index on the main content element of your webpage. Then, set a lower z-index on the footer component, which should have a position: fixed instead of position: absolute.

For example:

.container {
  position: relative;
  background: #fff;
  z-index: 2;
  margin-bottom: 100px; /* Must match footer height */
}
.footer {
  position: fixed;
  bottom: 0;
  background: red;
  z-index: 1;
  width: 100%;
  height: 100px;
}

You can view a simple demo I created here: http://codepen.io/anon/pen/reXdby.

Answer №3

At times, when you wish to understand how a specific CSS style works on a website, you can utilize the developer tools in your web browser (F12). Simply select the option to pick a DOM element on the page and analyze the CSS style. For instance, the code from your example page features a div with the following class:

.footer {
    background: #3f4245 url(../imgs/footer-bg.png) repeat-x left top;
    padding-top: 60px;
    padding-bottom: 80px;
    position: fixed;
    bottom: 0;
    left: 0;
    z-index: 100;
    height: 300px;
    -webkit-transform: translateZ(0);
}

This method may assist you in tracking other CSS styles in the future. Best regards.

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