#faIcons i {
    font-size: 2rem;
    display: block;

    pointer-events: none;
    margin-bottom: .5rem;
}

#faIcons a {
    display: block;
    text-align: center;
    text-decoration: none;

    position: relative;
    color: inherit;
}

#faIcons a:before {
    content: '';
    display: block;

    position: absolute;
    top: 50%;
    left: 50%;

    width: calc(100% + 1.5rem);
    height: calc(100% + 1.5rem);

    transform: translate(-50%, -50%);
    background-color: rgba(0, 0, 0, .2);
    transition: all .3s ease-in-out;

    opacity: 0;
    visibility: hidden;

    border-radius: .5rem;
}

#faIcons a:hover:before {
    opacity: 1;
    visibility: visible;
}

.btn {
    white-space: nowrap;
}