Как IMG с тем же
.img {
float: left;
width: 100px;
height: 100px;
background-size: cover;
}
Cooperative Caiman
.img {
float: left;
width: 100px;
height: 100px;
background-size: cover;
}<div class="img" style="background-image:url('http://i.imgur.com/tI5jq2c.jpg');"></div>
<div class="img" style="background-image:url('http://i.imgur.com/37w80TG.jpg');"></div>
<div class="img" style="background-image:url('http://i.imgur.com/B1MCOtx.jpg');"></div>