.glossary-term {
    border-bottom: 1px dotted #fff;
    cursor: help;
    position: relative;
}
.glossary-tooltip {
    display: none;
    background-color: #333;
    color: #fff;
    text-align: center;
    border-radius: 5px;
    padding: 5px;
    position: absolute;
    z-index: 10;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
}
.glossary-term:hover .glossary-tooltip {
    display: block;
}