.clear,.clearfix {
    clear: both;
}

.shareitem {
    text-align: right;
    height: 40px;
}
.shareitem a {
    background-color: rgb(59, 89, 152);
    width: 30px;
    height: 30px;
    display: block;
    text-align: center;
    float: right;
    transition: all .5s;
    margin-right: 5px;
}
.shareitem a img {
    filter: grayscale(100%) brightness(500%);
    padding: 5px;
}
.shareitem a:hover {
    margin-top: -6px;
}