body {
    background: no-repeat center center fixed;
    background-color: transparent;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}


.fondo-img1 {
    background: url('../img/bg_login_foto_N1.webp') no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}

.fondo-img2 {
    background: url('../img/bg_login_foto_1.webp') no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}

.img-center {
    margin: 0 auto;
}

.back-login {
    background: rgba(0, 0, 0, 0.5);
}

.back-form {
    background-color: white;
    border-left: 1px solid silver;
    border-right: 1px solid silver;
}

.center {
    text-align: center;
}

.img-pad {
    margin-top: 10px;
    width: 100%;
    height: 110px;
}

.bottom {
    border-bottom: 1px solid silver;
}

.top {
    border-top: 3px solid #3c8dbc;
    border-left: 1px solid silver;
    border-right: 1px solid silver;
}