.made-by a {
    display: block;
    position: relative;
    width: 1rem;
    height: 1rem;
    opacity: .5;
    transition: opacity .3s;
    color: #000;
}

.made-by a span {
    position: absolute;
    bottom: 120%;
    right: 0;
    width: fit-content;
    padding: 0.5rem;
    background-color: #fff;
    border-radius: var(--border-radius);
    opacity: 0;
    visibility: hidden;
    transition: opacity .3s, visibility .3s;
    box-shadow: var(--box-shadow);
    font-size: 0.7rem;
    line-height: 1rem;
    white-space: nowrap;
}

.made-by a:hover {
    color: #000;
    opacity: 1;
}

.made-by a:hover span {
    opacity: 1;
    visibility: visible;
}

@media (max-width: 860px) {
    .made-by a span {
        display: none;
    }
}