.callbackkiller.cbk-phone{
    display: none !important;
}

.button_phone{
    display: block;
}


/* Small devices (landscape phones, 576px and up) */
@media (min-width: 576px) {

}

/* Medium devices (tablets, 768px and up)*/
@media (min-width: 768px) {
    .callbackkiller.cbk-phone{
        display: flex !important;
    }

    .button_phone{
        display: none;
    }
}

/* Large devices (desktops, 992px and up)*/
@media (min-width: 992px) {

}

/* X-Large devices (large desktops, 1200px and up)*/
@media (min-width: 1200px) {

}

/* XX-Large devices (larger desktops, 1400px and up)*/
@media (min-width: 1400px) {

}