Bootstrap column vertical centered (middle aligned) divs

index.html

<div class="row">
    <div class="col-xs-6 vcenter">
        <div>Div1</div>
    </div>
    <div class="col-xs-6 vcenter">
        <div>Div2</div>
    </div>
</div>

style.css

.vcenter {
    display: inline-block;
    vertical-align: middle;
    float: none;
}