What is the best way to ensure a floated image matches the height of its parent container?

I am facing an issue with setting the height of a logo within a footer div to match the height of the div itself. Using height: 100% doesn't seem to work as expected.

Below is the relevant HTML:

<footer>
  <img src="images/circle_logo.png" alt="GriffMUN 2014" title="GriffMUN 2014">
  <p>Details here</p><p>More details here.</p>
</footer>

And relevant CSS:

footer {
  color: #ffffff;
  padding: 10px 10px 10px 10px;
  text-align: right;
  margin: 0 auto;
  background-color: #000000;
  font-size: small;
  float: center;
}

footer img {
  float:right;
  height:100%;
}
cssimagehtmlcss-float

Answer №1

Insert a new absolute positioned div inside the footer to contain the image.

<footer>
     <p>Additional information here</p><p>More detailed information here.</p>
     <div class="new_class"><img src="images/circle_logo.png" alt="GriffMUN 2014" title="GriffMUN 2014"></div>
    </footer>

CSS

footer {
  color: #ffffff;
  padding: 10px 10px 10px 10px;
  text-align: right;
  margin: 0 auto;
  background-color: #000000;
  font-size: small;
  float: center;
  position:relative;
}

footer img {
  float:right;
  height:100%;
}
.new_class {
    position:absolute;
    right:50px;
    top:0;
    height:100%;
    }

Adjust the positioning of the div as needed to display the <p> tags.

Answer №2

If you have a fixed height for the footer, simply use height: inherit;. However, if the footer's height is variable (such as a percentage rather than a specific number), you can utilize jQuery to adjust the image height accordingly:

$('footer img').height( $('footer').height() + 'px');

This code assumes that the image is nested within the footer element. Let me know if you need further assistance!

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