.lang img {
    position: relative;
    width: 45px;
    height: 45px;
    opacity: 1;
    transition: .5s ease;
    backface-visibility: hidden;
}

.img_wrapper {
    display: inline-block;
}

.img_description {
    visibility: hidden;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    visibility: hidden;
    opacity: 0;
}

/*.img_wrapper:hover .img_description{*/
/*    visibility: visible;*/
/*    opacity: 0.3;*/
    
/*}*/