.form-signin {
    max-width: 330px;
    padding: 15px;
    margin: 0 auto;
}

    .form-signin .form-signin-heading {
        margin-bottom: 10px;
    }

.container {
    padding-right: 15px;
    padding-left: 15px;
    margin-right: auto;
    margin-left: auto;
}
.btn-lg {
    margin-top: 20px;
}
.navbar-login
{
    width: 305px;
    padding: 10px;
    padding-bottom: 0px;
}
.navbar-login-session
{
    padding: 10px;
    padding-bottom: 0px;
    padding-top: 0px;
}
/*media*/
@media (min-width: 1200px) {
    .container {
        width: 1170px;
    }
}

@media (min-width: 992px) {
    .container {
        width: 970px;
    }
}

@media (min-width: 768px) {
    .container {
        width: 750px;
    }
}