.tooltip {
    position: relative;
    display: inline-block;
    
    width: 30px;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 280px;
    background-color: black;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 5px 5px;
    
    /* Position the tooltip */
    position: absolute;	
    z-index: 1;
    top: -5px;
    left: 80%;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
}