.tooltip-container{position:relative;display:inline-block;cursor:pointer;text-decoration:underline}.tooltip-text{visibility:hidden;width:100px;background-color:#333;color:#fff;text-align:center;border-radius:5px;padding:5px;position:absolute;z-index:1;bottom:125%;right:0;opacity:0;transition:opacity 0.3s}.tooltip-text::after{content:"";position:absolute;top:100%;right:10px;border-width:5px;border-style:solid;border-color:#333 #fff0 #fff0 #fff0}.tooltip-container:hover .tooltip-text{visibility:visible;opacity:1}th.sorted-asc::after{content:" ▲"}th.sorted-desc::after{content:" ▼"}