圆形动效loding特效最骚特效

以下是部分html代码

<!-- From zuisao.com --> 
<div class="pl">
	<div class="pl__dot"></div>
	<div class="pl__dot"></div>
	<div class="pl__dot"></div>
	<div class="pl__dot"></div>
	<div class="pl__dot"></div>
	<div class="pl__dot"></div>
	<div class="pl__dot"></div>

以下是部分CSS代码

   /* From zuisao.com */ 
.pl {
  box-shadow: 2em 0 2em rgba(0, 0, 0, 0.2) inset, -2em 0 2em rgba(255, 255, 255, 0.1) inset;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  letter-spacing: 0.1em;
  text-transform: uppercase;