body {
    /*background-color: #003366;
    opacity: 0.4;*/
    background: url('../Images/Fondo.jpeg') no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}

.btn-success{
    background-color: #FFF;
    /*border-color: #FFCC00;*/
    border: 2px solid #FFCC00;
    color: #003366;
}

.btn-success:hover{
     background-color: #FFCC00;
     border-color: #FFCC00;
     color: #FFF;
}