/*http://stackoverflow.com/questions/22196587/how-to-center-align-vertically-the-container-in-bootstrap*/
html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}

.container-fluid {
    height: 100%;
    display: table;
    width: 100%;
    padding: 0;
}

.row-fluid {
    height: 100%;
    display: table-cell;
    vertical-align: middle;
}

.centering {
    float: none;
    margin: 0 auto;
}