.fb_share {
    width: 150px;
    height: 60px;
    display: block;
    background: #4877cd;
    color: #fff !important;
    line-height: 60px;
    text-align: center;
    margin-top: 20px;
    transition: 0.15s ease-in-out;
}

.fb_share span {
    margin-right: 10px;
}

.fb_share:hover {
    background: #6496f1;
}