@media all and (max-width: 640px) {
    .login-body{
        background-image: none;
    }

    .login-panel{
        width: 100%;
        max-width: 350px;
        margin: 0 auto auto auto;
        padding: 0 20px 0 20px;
    }

    .card{
        box-shadow: none;
        -webkit-box-shadow: none;
        -moz-box-shadow: none;
        border: none !important;
    }

    .label-IVA {
        font-size: 15px;
    }
}