JSFiddle - React, Tailwind, and code Playground

HTML

<div class="box">
    <div class="overlay">
        Overlay
    </div>
</div>

CSS

.box {
    height: 250px;
    width: 250px;
    background: aqua;
    position: relative;
    overflow: hidden;
}

.overlay {
    position: absolute;
    background-color: rgba(0, 0, 0, 0.5);
    width: 100%;
    color: white;
    padding: 10px;
    left:-999px;
    bottom: 0;
    transition: left 300ms ease-out;
}

.box:hover .overlay {
    left:0;
}