.share_pop_up {
    position: absolute;
    /*visibility: hidden;*/
    display: none;
    left: 0;
    z-index: 1000;
    float: left;
    min-width: 2rem;
    padding: .3rem;
    margin: .1rem 0 0;
    text-align: left;
    list-style: none;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid #999999;
    border-radius: .25rem;
}
.share_pop_up_show {
    /*visibility: visible;*/
    display: block;
    animation: fadeIn 1s;
}
@keyframes fadeIn {
    from {opacity: 0;}
    to {opacity:1 ;}
}