div.container-fluid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    height: 100%;
    background: url("../img/login-bg.jpg") repeat-y top center;
    background-size: cover;
}

div.contenedor {
    margin-top:10%;
    max-width:70%;  
}

.bigFont {
    font-size:20em;
    color:white;
    padding-top:80px;
    padding-bottom:80px;
}