尝试让sprite在一定时间后从屏幕上消失

<style>
    .sprite {
        width: 100px;
        height: 100px;
        background-color: red;
        animation: fadeOut 2s linear forwards;
    }

    @keyframes fadeOut {
        0% {
            opacity: 1;
        }
        100% {
            opacity: 0;
        }
    }
</style>

<div class="sprite"></div>

<style>
    .sprite {
        width: 100px;
        height: 100px;
        background-color: red;
    }
</style>

<div class="sprite"></div>

<script>
    setTimeout(function() {
        var sprite = document.querySelector('.sprite');
        sprite.parentNode.removeChild(sprite);
    }, 2000);
</script>