On this page I have 12 images, so far okay. But I like to make them more responsive.
https://www.outdoorequipped.com/
The code I use is follow and I know I am missing something, but I am not sure what.
Also, how I can do, that this div, where all those 12 images are, has a "auto hight?
<div class="row" style="height: 60px;">
<div class="col-xs-6 col-sm-3">
<div class="featured-brands">
<div class="row">
<div class="col-sm-4 col-xs-4">
<div class="element-content brand"><a href="https://www.outdoorequipped.com/active/brands/asics.html"> <img class="imagesize" alt="" src="https://www.outdoorequipped.com/media/wysiwyg/four_cats/logos/asics-logo-60.png" /> </a></div>
</div>
<div class="col-sm-4 col-xs-4">
<div class="element-content brand"><a href="https://www.outdoorequipped.com/active/brands/puma.html"> <img class="imagesize" alt="" src="https://www.outdoorequipped.com/media/wysiwyg/four_cats/logos/puma-logo-60.png" /> </a></div>
</div>
<div class="col-sm-4 col-xs-4">
<div class="element-content brand"><a href="https://www.outdoorequipped.com/active/brands/speedo.html"> <img class="imagesize" alt="" src="https://www.outdoorequipped.com/media/wysiwyg/four_cats/logos/speedo-logo-60.png" /> </a></div>
</div>
</div>
</div>
</div>
<div class="col-xs-6 col-sm-3">
<div class="featured-brands">
<div class="row">
<div class="col-sm-4 col-xs-4">
<div class="element-content brand"><a href="https://www.outdoorequipped.com/outdoor/brands/fjallraven.html"> <img class="imagesize" alt="" src="https://www.outdoorequipped.com/media/wysiwyg/four_cats/logos/fjallraven-logo-60.png" /> </a></div>
</div>
<div class="col-sm-4 col-xs-4">
<div class="element-content brand"><a href="https://www.outdoorequipped.com/outdoor/brands/marmot.html"> <img class="imagesize" alt="" src="https://www.outdoorequipped.com/media/wysiwyg/four_cats/logos/marmot-logo-60.png" /> </a></div>
</div>
<div class="col-sm-4 col-xs-4">
<div class="element-content brand"><a href="https://www.outdoorequipped.com/outdoor/brands/woolrich.html"> <img class="imagesize" alt="" src="https://www.outdoorequipped.com/media/wysiwyg/four_cats/logos/woolrich-logo-60.png" /> </a></div>
</div>
</div>
</div>
</div>
<div class="col-xs-6 col-sm-3">
<div class="featured-brands">
<div class="row">
<div class="col-sm-4 col-xs-4">
<div class="element-content brand"><a href="https://www.outdoorequipped.com/fashion/brands/giorgo-brutini.html"> <img class="imagesize" alt="" src="https://www.outdoorequipped.com/media/wysiwyg/four_cats/logos/giorgobrutini-logo-60.png" /> </a></div>
</div>
<div class="col-sm-4 col-xs-4">
<div class="element-content brand"><a href="https://www.outdoorequipped.com/fashion/brands/kenneth-cole.html"> <img class="imagesize" alt="" src="https://www.outdoorequipped.com/media/wysiwyg/four_cats/logos/kennethcole-logo-60.png" /> </a></div>
</div>
<div class="col-sm-4 col-xs-4">
<div class="element-content brand"><a href="https://www.outdoorequipped.com/fashion/brands/dr-martens.html"> <img class="imagesize" alt="" src="https://www.outdoorequipped.com/media/wysiwyg/four_cats/logos/drmartens-logo-60.png" /> </a></div>
</div>
</div>
</div>
</div>
<div class="col-xs-6 col-sm-3">
<div class="featured-brands">
<div class="row">
<div class="col-sm-4 col-xs-4">
<div class="element-content brand"><a href="https://www.outdoorequipped.com/work/brands/caterpillar.html"> <img class="imagesize" alt="" src="https://www.outdoorequipped.com/media/wysiwyg/four_cats/logos/caterpillar-logo-60.png" /> </a></div>
</div>
<div class="col-sm-4 col-xs-4">
<div class="element-content brand"><a href="https://www.outdoorequipped.com/work/brands/sanita.html"> <img class="imagesize" alt="" src="https://www.outdoorequipped.com/media/wysiwyg/four_cats/logos/sanita-logo-60.png" /> </a></div>
</div>
<div class="col-sm-4 col-xs-4">
<div class="element-content brand"><a href="https://www.outdoorequipped.com/work/brands/wrangler.html"> <img class="imagesize" alt="" src="https://www.outdoorequipped.com/media/wysiwyg/four_cats/logos/wrangler-logo-60.png" /> </a></div>
</div>
</div>
</div>
</div>
</div>