body {
    background-size: cover;
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    height: auto;
}

.contenedor-logo{
    width: 100%;
    max-width: 322px;
    text-align: center;
    margin: 0 auto 35px;
}

#formulario-login{
    /*Sombra*/
    -webkit-box-shadow: 10px 10px 30px -9px rgba(0,0,0,0.75);
    -moz-box-shadow: 10px 10px 30px -9px rgba(0,0,0,0.75);
    box-shadow: 10px 10px 30px -9px rgba(0,0,0,0.75);
}