@media only screen and (max-device-width: 400px) {
    .views-fluid-grid-inline.views-fluid-grid-item.views-row{
        width: 155px !important;   
    }
}

@media only screen and (max-device-width: 321px) {
    .views-fluid-grid-inline.views-fluid-grid-item.views-row{
        width: 137px !important;   
    }
}