♥を🍣にしてメニューを寿司にする

寿司.css

/* 引用したやつ */
.TweetAction--heart .Icon--heart {
    background: none !important;
}
.TweetAction--heart .Icon--heart:before {
    content: '🍣';
    font-size: 0.9em !important;
}

@-moz-document domain(twitter.com) {
/* 寿司 */
.HeartAnimation {
    background: none !important;
    left: auto !important;
    top: auto !important;

}
.HeartAnimation:before {
    content: '🍣';
    position: absolute;
    left: 0;
    top: 0;
}
/* 寿司メニュー */
.ProfileNav-item--favorites .ProfileNav-label {
    text-indent: -3rem !important;
    white-space: nowrap !important;
    width: 2.5rem !important;
    overflow: hidden !important;
}
.ProfileNav-item--favorites .ProfileNav-label:after {
    content: '寿司';
    display: inline-block !important;
    text-indent: 1rem !important;
}
/* 寿司カウント */
.stats .request-favorited-popup {
    margin-left: -10rem !important;
}
.stats .request-favorited-popup:after {
    content: '寿司';
    position: absolute !important;
    display: block !important;
    margin-left: 10rem !important;
    margin-top: -1.1rem !important;
}
.stats .request-favorited-popup > strong {
    margin-left: 10rem !important;
}