<div class="box">
<div class="img-box">
<img src='https://1588292574.rsc.cdn77.org/photo/3aab94a25c659f737f41dd62e234457d-0-view.jpg'/>
</div>
</div>
.box{
width:200px
}
.img-box{
width:100%;
position:relative;
padding-top:100%;
}
img{
position:absolute;
top:0;
width:100%;
bottom:0;
}