.custom-tooltip{position:absolute;top:calc(100% + 10px);background:#333;color:#fff;padding:8px 12px;border-radius:4px;white-space:nowrap;z-index:9999;font-size:12px;pointer-events:none;opacity:0;transform:translateX(-50%) translateY(-5px);transition:opacity .2s ease,transform .2s ease}.custom-tooltip.show{opacity:1;transform:translateX(-50%) translateY(0)}