.tooltip{position:relative;display:inline-block;cursor:pointer}.tooltip .tooltiptext{visibility:hidden;width:220px;background-color:#555;color:#fff;text-align:center;border-radius:6px;padding:5px;position:absolute;z-index:1;bottom:125%;left:50%;margin-left:-110px;opacity:0;transition:opacity .3s}.tooltip:hover .tooltiptext{visibility:visible;opacity:1}