body.login {

    background: url(img/background-login.png) no-repeat center center fixed; 
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;

    font-size: 1rem !important;
    height: 100%;

    color: white;

}

body.login .active.dimmer {
    z-index: 1 !important;
    background: rgba(0, 0, 0, .75);
    position: fixed;
}

body.login .contenitore {
    z-index: 2;
    position: absolute;
    width: max-content;
    text-align: center;
    padding: 1.5rem;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

body.login h1,
body.login h3 {
    color: #fff;
}

.logo {
    height: 100px; 
}

.ui.checkbox label {
    color: #fff !important;
    font-size: 1rem !important;
    text-transform: uppercase !important;
}

.btn-group.pull-right.group-actions {
    display: none;
}

@media only screen and (max-device-width: 400px) {
    body.login .contenitore {
      zoom: 2 !important;
    }
}

@media screen and (max-device-height: 400px) and (orientation: landscape) {

    body.login .contenitore {
        top: 0 !important;
        transform: translate(-50%, 0);
    }
  
}