Image transparent
HTML
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.0/jquery.min.js"></script>
<div class="container">
<img src="https://imgd.aeplcdn.com/1056x594/n/suk7osa_1474663.jpg?q=85">
</div>
CSS
.container {
width: 100%;
max-width: 600px;
padding: 10px;
background: url(https://picsum.photos/200/300) center center no-repeat;
background-size: cover;
}
img {
width: 100%;
}