Example
HTML
<div class="wrap">
<img src="http://lorempixel.com/400/200/" />
</div>
CSS
.wrap {
height: 50px;/* max image height */
width: 100px;
border: 1px solid blue;
text-align: center;
}
.wrap:before {
content:"";
display: inline-block;
height: 100%;
vertical-align: middle;
width: 1px;
}
img {
vertical-align: middle;
}
