JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
    <img src="http://placehold.it/400x100" alt="" />
</div>

<div class="container">
    <img src="http://placehold.it/200x200" alt="" />
</div>

CSS

.container {
    width: 60vw;
    height: 40vh;
    margin-top: 10px;
    border: 1px solid #000;
    overflow: hidden;
    text-align: center;
}

img {
   width: 100%;
   height: 100%;
   object-fit: contain;
}