JSFiddle - React, Tailwind, and code Playground

by Nick Hulea

HTML

<h1>Maintaining Image Aspect Ratios</h1>

<p>A series of responsive images works well if all have the same aspect ratio:</p>
<ul>
    <li><a href="#"><img src="http://lorempixel.com/320/180/abstract" /></a>
    </li>
    <li><a href="#"><img src="http://lorempixel.com/320/180/city" /></a>
    </li>
    <li><a href="#"><img src="http://lorempixel.com/352/198/technics" /></a>
    </li>
</ul>
<p>But how can you set a height if images have differing sizes?</p>
<ul>
    <li><a href="#"><img src="http://lorempixel.com/320/180/abstract" /></a>
    </li>
    <li><a href="#"><img src="http://lorempixel.com/320/320/city" /></a>
    </li>
    <li><a href="#"><img src="http://lorempixel.com/200/150/technics" /></a>
    </li>
</ul>
<p>We can use the top-padding percentage trick:</p>
<ul id="aspect">
    <li><a href="#"><img src="http://lorempixel.com/320/180/abstract" /></a>
    </li>
    <li><a href="#"><img src="http://lorempixel.com/320/320/city" /></a>
    </li>
    <li><a href="#"><img src="http://lorempixel.com/200/150/technics" /></a>
    </li>
</ul>

CSS

body {
    font: 100% sans-serif;
    padding: 0;
    margin: 10px;
    color: #333;
    background-color: #fff;
}
ul {
    float: left;
    width: 100%;
    padding: 0;
    margin: 0 0 2em 0;
    list-style-type: none;
}
li {
    float: left;
    width: 33.3%;
    padding: 0;
    margin: 0;
    background-color: #000;
    border: 10px solid #fff;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}
li a {
    display: block;
    width: 100%;
    overflow: hidden;
}
img {
    display: block;
    max-width: 100%;
    max-height: 100%;
    margin: auto;
    -webkit-transition: all 2s ease-out;
    transition: all 2s ease-out;
}
a:hover img, a:focus img {
    -webkit-transform: scale(1.3);
    transform: scale(1.3);
}
#aspect li a {
    position: relative;
    height: 0;
    padding-top: 56.25%;
}
#aspect img {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
}