Centrar div con bootstrap

div.html

<div class="container">
    <div class="row row-centered">
        <div class="col-xs-6 col-centered"></div>
        <div class="col-xs-6 col-centered"></div>
        <div class="col-xs-3 col-centered"></div>
        <div class="col-xs-3 col-centered"></div>
        <div class="col-xs-3 col-centered"></div>
    </div>
</div>

estilo.css

/* centered columns styles */
.row-centered {
    text-align:center;
}
.col-centered {
    display:inline-block;
    float:none;
    /* reset the text-align */
    text-align:left;
    /* inline-block space fix */
    margin-right:-4px;
}

Thanks bro