.shareList {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    container: share-list / inline-size;
    margin: 0;
    padding: 0;
    font-size: 1.5em;
    list-style: none;
}

.shareItem {
    flex: 1;
    display: block;
    margin-bottom: 20px;
}

.shareButton {
    position: relative;
    display: block;
    color: grey;
    text-decoration: none;
}

.shareText::after {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    margin: auto;
}

.shareText {
    position: relative;
    display: block;
    padding-top: 4em;
    text-align: center;
        font-size: 40%;
    width: 40px;
    height: 40px;
}

.shareText::after {
    display: block;
    box-sizing: content-box;
    width: 1em;
    height: 1em;
    padding: .6em;
    border: 1px solid;
    border-radius: 100%;
    font-size: 1.6em;
    transition: box-shadow .4s cubic-bezier(.25,.46,.45,.94);
}

.shareButton:hover .shareText::after {
    border-color: #ff003d;
    color: #fff;
    box-shadow: 0 0 0 2em #ff003d inset;
}

@media screen and (min-width: 768px) {
    @container sharelist (max-width: 260px) {
        .shareList .shareItem {
            flex: 0 100%;
        }
    }
}