/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) { 
    /* login */
    .container-signin {
        background: url("/uploads/kazaar/background.bin") no-repeat center center;
        background-size: cover;
        margin: 0;
    }
    .form-signin-container {
        border: solid 1px #ccc;
        background-color: rgba(255, 255, 255, 0.9);
    }
}