效果：
css光源扫描
代码：
html<div class="light"><img src="~@/assets/光源.png" alt="">
</div>css
<style>
.light {position: absolute;top: 3%;left: 0;transform: translate(-50%, -50%);animation: move 5s infinite;animation-timing-function: linear;overflow: hidden;mix-blend-mode:overlay; //实现图片重叠混合高亮效果
}@keyframes move{from {left: calc(0 + 6.25rem);}to {left: calc(100% - 9.375rem);}
}</style>光源图片（下面有图）
