How to preserve Aspect Ratio of Images with Tailwind CSS

With these few tailwind classes you can lock the aspect ratio of an image. In this example the height will be 2/3rds of the height.

<div class="relative overflow-hidden pb-2/3">
    <img src="" alt="" class="absolute h-full w-full object-cover" />
</div>

Since percentage values for spacing are not available per default you'll need to add it in tailwind.config.js like so:

module.exports = {
  theme: {
    extend: {
      spacing: {
        '2/3': '66.666667%'
      }
    },
  },
}

More details in the Tailwind Docs