.btn-group.switchlangs img {
    max-height: 20px;
}

.mini-wrapper {
    position: relative;
    display: inline-block;
    cursor: pointer;
}

.mini-wrapper::after {
    content: "\f00e";
    font-family: "Font Awesome 5 Free";
    font-weight: 900;
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,.45);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: #fff;
    opacity: 0;
    transition: opacity .25s;
    pointer-events: none;
}

.mini-wrapper:hover::after {
    opacity: 1;
}