#mod_documentheque .image_hover{position:relative;display:block}#mod_documentheque .image_hover .icone_hover{position:absolute;top:0;left:0;display:none;width:100%;height:100%;background-color:rgba(0,0,0,0.5);color:#fff;padding-top:50%;text-align:center}#mod_documentheque .image_hover:hover .icone_hover{display:block}