Pen Settings

HTML

CSS

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource

JavaScript

Babel is required to process package imports. If you need a different preprocessor remove all packages first.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource

Behavior

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

Editor Settings

Code Indentation

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.

HTML

              
                <div class='container'>
  
  <h1>Responsive equal height images with CSS</h1>
  
  <h2 class='muted'>A reminder for myself, with all credit to <a href='https://kartikprabhu.com/articles/equal-height-images-flexbox'>Kartik Prabhu</a></h2>
  
  <p>Wanna put a bunch of images in a row, and make them all the same height? Well, you can. Thanks, flexbox!</p>
  
  <div class='pics_in_a_row'>
    <div class='img1'>
      <img src='http://blimpage.com/pants/codepen/mm1.jpg'>
    </div>
    <div class='img2'>
      <img src='http://blimpage.com/pants/codepen/mm2.jpg'>
    </div>
  </div>
  
  <p>It's <em>slightly</em> trickier than I first hoped, though - you need to:</p>
  
  <ol>
    <li>Put all of your images inside a container div</li>
    <li>Set <code>display: flex;</code> on the container div</li>
    <li>Wrap each image in a div</li>
    <li>Set the <code>flex</code> property of each image's wrapper div to the image's aspect ratio (its width divided by its height)</li>
  </ol>
  
  <p>And boom! You're done!</p>
  
  <div class='pics_in_a_row'>
    <div class='img1'>
      <img src='http://blimpage.com/pants/codepen/mm1.jpg'>
    </div>
    <div class='img2'>
      <img src='http://blimpage.com/pants/codepen/mm2.jpg'>
    </div>
    <div class='img3'>
      <img src='http://blimpage.com/pants/codepen/mm3.jpg'>
    </div>
  </div>

  <p>The only real bummer is having to declare the aspect ratio for each image. Depending on your preference or authoring process, you could do it a few different ways:</p>
  
  <ul>
    <li>Declare the aspect ratio in your stylesheet, with a class name for each wrapper div (as I've done in this demo)</li>
    <li>Declare the aspect ratio inline, as a <code>style</code> attribute on each wrapper div</li>
    <li>Dynamically calculate the aspect ratio for each image using JavaScript</li>
  </ul>

  <p>That last option is tempting; not needing JavaScript is nice, but needing to specify the aspect ratio for each and every image is a pain.</p>
  
  <p>With the CSS methods, you do have a few options for specifying the aspect ratio:</p>
  
  <ul>
    <li>Work out the aspect ratio yourself and hard-code it into the CSS (as I've done in this demo)</li>
    <li>Use CSS's <code>calc()</code> to calculate the aspect ratio (e.g. <code>flex: calc(600/800);</code>)</li>
    <li>Use a preprocessor to calculate the aspect ratio at build time</li>
  </ul>
  
  <div class='pics_in_a_row'>
    <div class='img4'>
      <img src='http://blimpage.com/pants/codepen/mm4.jpg'>
    </div>
    <div class='img5'>
      <img src='http://blimpage.com/pants/codepen/mm5.jpg'>
    </div>
  </div>

  <p>Add as many images as you like - their widths will just shrink until they all fit.</p>
  
  <p>Use with discretion though - if you add too many, they'll all be too small to see. You might want to switch to a different layout at smaller viewport sizes.</p>
  
  <div class='pics_in_a_row'>
    <div class='img1'>
      <a href='https://www.guitarnerd.com.au/2011/07/fender-musicmaster-bass/'><img src='http://blimpage.com/pants/codepen/mm1.jpg'></a>
    </div>
    <div class='img2'>
      <a href='http://www.sheltonsguitars.com/2009/12-9-09/squier-musicmaster-bass-12-9-07.html'><img src='http://blimpage.com/pants/codepen/mm2.jpg'></a>
    </div>
    <div class='img3'>
      <a href='http://www.seymourduncan.com/forum/showthread.php?73445-Hot-Rails-as-a-single-for-Fender-Musicmaster-bass-guitar'><img src='http://blimpage.com/pants/codepen/mm3.jpg'></a>
    </div>
    <div class='img4'>
      <a href='http://imageevent.com/firstflight/fendermusicmasterbass'><img src='http://blimpage.com/pants/codepen/mm4.jpg'></a>
    </div>
    <div class='img5'>
      <a href='https://www.muffwiggler.com/forum/viewtopic.php?p=1810400'><img src='http://blimpage.com/pants/codepen/mm5.jpg'></a>
    </div>
  </div>
  
  <p>Remember to vendor prefix those flexbox properties!</p>
  
  <p class='muted'>Click any of the images in that last row for their sources. Thanks, bass enthusiasts of the internet!</p>
  
</div>

              
            
!

CSS

              
                /* Important stuff for this demo. */

img {
  width: 100%;
  height: auto;
  vertical-align: middle;
}

.pics_in_a_row {
  display: flex;
}

.img1 { flex: 1.3344; }
.img2 { flex: 1.3345; }
.img3 { flex: 0.7505; }
.img4 { flex: 1.5023; }
.img5 { flex: 0.75; }



/* Aaaand just some general styling. */

*, *:before, *:after {
  box-sizing: border-box;
}

body {
  background: rebeccapurple;
}

.container {
  background: white;
  margin: 0 auto;
  padding: 5%;
  width: 75%;
}

h1 {
  margin-top: 0;
}

h2 {
  font-weight: normal;
  font-size: 19px;
  margin-bottom: 30px;
}

.muted {
  font-style: italic;
  color: #666;
}

p, li {
  line-height: 1.5
}

li {
  margin-bottom: 7px;
}

p + p {
  margin-top: -7px;
}

code {
  background: #eee;
  padding: 2px 5px;
  font-size: 90%;
  border: 1px solid #ccc;
  border-radius: 4px;
  margin: 0 2px;
}

.pics_in_a_row {
  margin: 25px 0;
}

.pics_in_a_row > div:not(:last-child) {
  margin-right: 2%;
}

              
            
!

JS

              
                
              
            
!
999px

Console