.share-publication{
    display: block;
    width: 96%;
    margin: 10px auto;
    text-align: right;
    line-height: 1;
}
.share-publication .button{
    display: inline-block;
    margin: 0;
    border: none;
    width: 44px;
    height: 44px;
    content: " ";
    position: relative;
    background: none;
    cursor: pointer;
}
.share-publication .button img{
    margin: 0;
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    padding: 0;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    filter: grayscale(80%);
}
.share-publication .button .hover{
    display: block;
    position: absolute;
    top: 0;
    right: 50%;
    width: 0;
    height: 42px;
    background: 0;
    font-size: 0;
}
.share-publication .button:hover img{
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 2;
    width: 44px;
    height: 44px;
    box-shadow: 0 0 10px blue;
    transition-duration: .6s;
    filter: grayscale(1%);
}
.share-publication .button:hover .hover{
    position: absolute;
    top: 0;
    right: 50%;
    width: 208px;
    height: 42px;
    border: 1px solid rgb(0,0,0,.9);
    background: #fff;
    z-index: 1;
    font-size: 12px;
    color: rgb(0,0,0,.6);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 30px 0 0 30px;
    transition-duration: .6s;
}