CSS Flex Grid: matching image heights of different aspect ratios? - html

Question

I have an example of a flex grid below. It takes 2 types of images, one a square and another a 16/9 rectangle. As you can see from the demo below, the heights dont match up due to the different aspect rations. Is there a way to "match" heights and maintain the aspect ratios? Or is this not possible?
Ideally, setting a max height would be great and have the width auto adjust based on that but I can't seem to get that working.
.root {
width: 100%;
max-width: 1200px;
}
.container {
display: flex;
flex-wrap: wrap;
width: 100%;
padding-left: -10px;
padding-right: -10px;
}
.box1 {
max-width: 200px;
flex: 1 0 23%;
padding: 10px;
}
.box2 {
max-width: 300px;
flex: 1 0 33%;
padding: 10px;
}
img {
width: 100%;
}
<div class="root">
<div class="container">
<div class="box1">
<img src="https://play-lh.googleusercontent.com/IeNJWoKYx1waOhfWF6TiuSiWBLfqLb18lmZYXSgsH1fvb8v1IYiZr5aYWe0Gxu-pVZX3=s180-rw"/>
</div>
<div class="box2">
<img src="https://upload.wikimedia.org/wikipedia/commons/thumb/8/80/Aspect_ratio_-_16x9.svg/1200px-Aspect_ratio_-_16x9.svg.png" />
</div>
<div class="box1">
<img src="https://play-lh.googleusercontent.com/IeNJWoKYx1waOhfWF6TiuSiWBLfqLb18lmZYXSgsH1fvb8v1IYiZr5aYWe0Gxu-pVZX3=s180-rw"/>
</div>
<div class="box1">
<img src="https://play-lh.googleusercontent.com/IeNJWoKYx1waOhfWF6TiuSiWBLfqLb18lmZYXSgsH1fvb8v1IYiZr5aYWe0Gxu-pVZX3=s180-rw"/>
</div>
<div class="box1">
<img src="https://play-lh.googleusercontent.com/IeNJWoKYx1waOhfWF6TiuSiWBLfqLb18lmZYXSgsH1fvb8v1IYiZr5aYWe0Gxu-pVZX3=s180-rw"/>
</div>
<div class="box1">
<img src="https://play-lh.googleusercontent.com/IeNJWoKYx1waOhfWF6TiuSiWBLfqLb18lmZYXSgsH1fvb8v1IYiZr5aYWe0Gxu-pVZX3=s180-rw"/>
</div>
<div class="box1">
<img src="https://play-lh.googleusercontent.com/IeNJWoKYx1waOhfWF6TiuSiWBLfqLb18lmZYXSgsH1fvb8v1IYiZr5aYWe0Gxu-pVZX3=s180-rw"/>
</div>
<div class="box1">
<img src="https://play-lh.googleusercontent.com/IeNJWoKYx1waOhfWF6TiuSiWBLfqLb18lmZYXSgsH1fvb8v1IYiZr5aYWe0Gxu-pVZX3=s180-rw"/>
</div>
<div class="box2">
<img src="https://upload.wikimedia.org/wikipedia/commons/thumb/8/80/Aspect_ratio_-_16x9.svg/1200px-Aspect_ratio_-_16x9.svg.png" />
</div>
<div class="box1">
<img src="https://play-lh.googleusercontent.com/IeNJWoKYx1waOhfWF6TiuSiWBLfqLb18lmZYXSgsH1fvb8v1IYiZr5aYWe0Gxu-pVZX3=s180-rw"/>
</div>
<div class="box1">
<img src="https://play-lh.googleusercontent.com/IeNJWoKYx1waOhfWF6TiuSiWBLfqLb18lmZYXSgsH1fvb8v1IYiZr5aYWe0Gxu-pVZX3=s180-rw"/>
</div>
<div class="box1">
<img src="https://play-lh.googleusercontent.com/IeNJWoKYx1waOhfWF6TiuSiWBLfqLb18lmZYXSgsH1fvb8v1IYiZr5aYWe0Gxu-pVZX3=s180-rw"/>
</div>
<div class="box2">
<img src="https://upload.wikimedia.org/wikipedia/commons/thumb/8/80/Aspect_ratio_-_16x9.svg/1200px-Aspect_ratio_-_16x9.svg.png" />
</div>
<div class="box1">
<img src="https://play-lh.googleusercontent.com/IeNJWoKYx1waOhfWF6TiuSiWBLfqLb18lmZYXSgsH1fvb8v1IYiZr5aYWe0Gxu-pVZX3=s180-rw"/>
</div>
<div class="box1">
<img src="https://play-lh.googleusercontent.com/IeNJWoKYx1waOhfWF6TiuSiWBLfqLb18lmZYXSgsH1fvb8v1IYiZr5aYWe0Gxu-pVZX3=s180-rw"/>
</div>
<div class="box1">
<img src="https://play-lh.googleusercontent.com/IeNJWoKYx1waOhfWF6TiuSiWBLfqLb18lmZYXSgsH1fvb8v1IYiZr5aYWe0Gxu-pVZX3=s180-rw"/>
</div>
<div class="box1">
<img src="https://play-lh.googleusercontent.com/IeNJWoKYx1waOhfWF6TiuSiWBLfqLb18lmZYXSgsH1fvb8v1IYiZr5aYWe0Gxu-pVZX3=s180-rw"/>
</div>
<div class="box1">
<img src="https://play-lh.googleusercontent.com/IeNJWoKYx1waOhfWF6TiuSiWBLfqLb18lmZYXSgsH1fvb8v1IYiZr5aYWe0Gxu-pVZX3=s180-rw"/>
</div>
</div>