box-shadow
box-shadow 属性向框添加 一个或多个 阴影。
box-shadow: h-shadow v-shadow blur spread color inset;
eg:画放大镜
box-shadow:0 0 0 7px rgba(255, 255, 255, 0.85), 0 0 7px 7px rgba(0, 0, 0, 0.25), 0 0 40px 2px rgba(0, 0, 0, 0.25) inset
Put the favorites in the favorites and empty the favorites.