Centrer sur bg

HTML

<div class="content">
			<div class="row vertical-cont">
				<div class="col-md-3">
					<img class="img-responsive" src="http://yesyouweb.com/1.jpg">
				</div>
				<div class="col-md-6 vertical-text savoir">
					<h2>"Lorem ipsum"</h2>
					
				</div>
				<div class="col-md-3">
					<img class="img-responsive" src="http://yesyouweb.com/2.jpg">
				</div>
			</div>
		</div>

CSS

.savoir {
  flex:1;
	 display: flex;
	background: red;
  align-items:center;
  justify-content:center;
}
.row {display:flex;}
.row img {display:block;}