JSFiddle - React, Tailwind, and code Playground

HTML

<div class="outer-div">
    <img class="img" src="http://placehold.it/150x150" />
    
    <div class="inner-div">
        <img src="http://placehold.it/150x150" />
    </div>
</div>

<div class="outer-div">
    <img src="http://placehold.it/150x150" />
</div>

<div class="inner-div">
    <img src="http://placehold.it/150x150" />
</div>

CSS

.outer-div > .inner-div > img {
    width: 75px
}