JSFiddle - React, Tailwind, and code Playground

HTML

<div class="picture-container">
    <img src="https://picsum.photos/200" alt="" class="parent-picture">    
    <img src="https://picsum.photos/200" alt="" class="child-picture">
</div>

CSS

.picture-container {
    width:300px;
    height:300px;
    float:left;
    position:relative;
}

.parent-picture {
    float:left;
    width:100%;
    height:100%;
    position:absolute;
    top:0;
    left:0;
}

.child-picture {
    position:absolute;
    top:0;
    right:0;
    border:1px solid red;
    width:100px;
    height:100px;
    display:none;
}

.parent-picture:hover .child-picture {
    display:block;
}