.emoji-popup-tab[data-active=".emoji-kit-emoji_leo"]:after{
    content : '';
    width: 20px;
    height: 20px;
    display: inline-block;
    background: url("icon.png") no-repeat;

}
.emj.is-sticker-1 {
    background-image: url(css_sprites.png);
    background-repeat: no-repeat;
    width: 192px !important;
    height: 192px !important;
}
.emoji-kit-item > .is-sticker-1 {
    transform: scale(0.4);
    margin: -55px -60px;
    image-rendering: -webkit-optimize-contrast;
}