.favorite-btn{position:absolute;top:12px;right:12px;background:rgba(0,0,0,.4);border:none;border-radius:50%;padding:8px 6px 6px;z-index:2;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s}.favorite-btn:hover{background:hsla(6,42%,75%,.8)}.favorite-btn.animating{opacity:.7;pointer-events:none}.favorite-btn .spinner{display:inline-block;width:24px;height:24px;border:3px solid #e74c3c;border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}