html {
    height: 100%;
}

body {
    height: 100%;
    background-image: url(../img/login-background.jpg);
    background-attachment: fixed;
    background-position: top;
    background-size: cover;
}

#contenedor {
    background: rgba(.0, .0, .0, .5);
}

.container-fluid {
    height:100%;
}

.w-100 {
    height: 100%;
}

h1, a {
    font-size: 20px;
    color: white;
    width: 100%;
    text-align: center;
    margin-top: 4%;
}

.contacto {
    font-size: 16px;
    color: white;
    width: 100%;
    text-align: center;  
}