.lang-pen {
    position: absolute;
    right: -40px;
    bottom: 66px;
    z-index: 999999;
}

@media(max-width:767px) {
    .lang-pen {
        position: absolute;
        right: calc(50% - 54px);
        bottom: 10px;
        z-index: 999999;
    }
}