@media (max-width: 576px) {
    div.logo-greeting-text {
        display:none;
    }

    .login-logo {
        margin: 10% 0 0 0;
        max-width: 100%;
    }

    #loginFormButton a {
        display: block;
        text-align: center !important;
    }

    #loginFormButton button {
        float: none !important;
        width: 100%;
    }
}

@media (max-height: 576px) {
    div.logo-greeting-text {
        display:none;
    }

    .login-logo {
        margin: 10% 0 0 0;
        max-width: 100%;
    }

    #loginFormButton button {
        float: none !important;
        width: 100%;
    }
}