style.css

.decronym {
    background: hsla(203, 67%, 90%, 1);
    padding: 1px 3px;
    margin: -1px -2px;
    transition: background color 0.2s;
    border-radius: 2px;
    cursor: pointer;
    display: inline-block;
}

.decronym:hover {
    background: #2276AB;
    color: #fcfcfc;
}

.wrap1 {
    position: relative;
    display: inline-block;
}

.decronym .wrap2 {
    position: absolute;
    opacity: 0;
    transition: 0.2s opacity;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    width: 350px;
    margin-left: -3px;
    bottom: 15px;
}

.decronym:hover .wrap2 {
    opacity: 1;
    pointer-events: all;
}

.decronym .meaning {
    background: #2276AB;
    position: static;
    padding: 2px 8px;
    border-radius: 2px;
    color: #fcfcfc;
    margin-bottom: 5px;
}

body .comment .entry {
    margin-left: 32px;
    overflow: visible;
}

.decronym a {
    color: #fcfcfc;
    text-decoration: underline;
}

.decronymInfo {
    position: fixed;
    transition: opacity 1s ease-in 1s;
    opacity: 0;
    pointer-events: none;
    left: 0;
    right: 0;
    bottom: 10px;
    z-index: 10;
    text-align: center;
}

.decronymInfo.active {
    transition: 0s opacity;
    opacity: 1;
}

.decronymInfo p {
    background: #2276AB;
    padding: 4px 8px;
    border-radius: 2px;
    color: #fcfcfc;
    font-size: 10px;
    display: inline-block;
}